/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hive.service.cli.session;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
import java.util.concurrent.Semaphore;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.hive.common.cli.HiveFileProcessor;
import org.apache.hadoop.hive.common.cli.IHiveFileProcessor;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.conf.HiveConf.ConfVars;
import org.apache.hadoop.hive.metastore.IMetaStoreClient;
import org.apache.hadoop.hive.metastore.api.MetaException;
import org.apache.hadoop.hive.ql.exec.Utilities;
import org.apache.hadoop.hive.ql.history.HiveHistory;
import org.apache.hadoop.hive.ql.metadata.Hive;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.processors.SetProcessor;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.hive.serde2.SerDeUtils;
import org.apache.hadoop.hive.serde2.thrift.ThriftFormatter;
import org.apache.hadoop.hive.shims.ShimLoader;
import org.apache.hive.common.util.HiveVersionInfo;
import org.apache.hive.service.auth.HiveAuthFactory;
import org.apache.hive.service.cli.FetchOrientation;
import org.apache.hive.service.cli.FetchType;
import org.apache.hive.service.cli.GetInfoType;
import org.apache.hive.service.cli.GetInfoValue;
import org.apache.hive.service.cli.HiveSQLException;
import org.apache.hive.service.cli.OperationHandle;
import org.apache.hive.service.cli.RowSet;
import org.apache.hive.service.cli.SessionHandle;
import org.apache.hive.service.cli.TableSchema;
import org.apache.hive.service.cli.operation.ExecuteStatementOperation;
import org.apache.hive.service.cli.operation.GetCatalogsOperation;
import org.apache.hive.service.cli.operation.GetColumnsOperation;
import org.apache.hive.service.cli.operation.GetCrossReferenceOperation;
import org.apache.hive.service.cli.operation.GetFunctionsOperation;
import org.apache.hive.service.cli.operation.GetPrimaryKeysOperation;
import org.apache.hive.service.cli.operation.GetSchemasOperation;
import org.apache.hive.service.cli.operation.GetTableTypesOperation;
import org.apache.hive.service.cli.operation.GetTypeInfoOperation;
import org.apache.hive.service.cli.operation.MetadataOperation;
import org.apache.hive.service.cli.operation.Operation;
import org.apache.hive.service.cli.operation.OperationManager;
import org.apache.hive.service.rpc.thrift.TProtocolVersion;
import org.apache.hive.service.server.ThreadWithGarbageCleanup;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* HiveSession
*
*/
public class HiveSessionImpl implements HiveSession {
// Shared between threads (including SessionState!)
private final SessionHandle sessionHandle;
private String username;
private final String password;
private final HiveConf sessionConf;
private final long creationTime;
// TODO: some SessionState internals are not thread safe. The compile-time internals are synced
// via session-scope or global compile lock. The run-time internals work by magic!
// They probably work because races are relatively unlikely and few tools run parallel
// queries from the same session.
// 1) OperationState should be refactored out of SessionState, and made thread-local.
// 2) Some parts of session state, like mrStats and vars, need proper synchronization.
private SessionState sessionState;
private String ipAddress;
private static final String FETCH_WORK_SERDE_CLASS =
"org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe";
private static final Logger LOG = LoggerFactory.getLogger(HiveSessionImpl.class);
private SessionManager sessionManager;
private OperationManager operationManager;
// Synchronized by locking on itself.
private final Set<OperationHandle> opHandleSet = new HashSet<OperationHandle>();
private boolean isOperationLogEnabled;
private File sessionLogDir;
// TODO: the control flow for this needs to be defined. Hive is supposed to be thread-local.
private Hive sessionHive;
private volatile long lastAccessTime;
private volatile long lastIdleTime;
private volatile int activeCalls = 0;
private final Semaphore operationLock;
public HiveSessionImpl(SessionHandle sessionHandle, TProtocolVersion protocol,
String username, String password, HiveConf serverConf, String ipAddress) {
this.username = username;
this.password = password;
creationTime = System.currentTimeMillis();
this.sessionHandle = sessionHandle != null ? sessionHandle : new SessionHandle(protocol);
this.sessionConf = new HiveConf(serverConf);
this.ipAddress = ipAddress;
this.operationLock = serverConf.getBoolVar(
ConfVars.HIVE_SERVER2_PARALLEL_OPS_IN_SESSION) ? null : new Semaphore(1);
try {
// In non-impersonation mode, map scheduler queue to current user
// if fair scheduler is configured.
if (! sessionConf.getBoolVar(ConfVars.HIVE_SERVER2_ENABLE_DOAS) &&
sessionConf.getBoolVar(ConfVars.HIVE_SERVER2_MAP_FAIR_SCHEDULER_QUEUE)) {
ShimLoader.getHadoopShims().refreshDefaultQueue(sessionConf, username);
}
} catch (IOException e) {
LOG.warn("Error setting scheduler queue: " + e, e);
}
// Set an explicit session name to control the download directory name
sessionConf.set(ConfVars.HIVESESSIONID.varname,
this.sessionHandle.getHandleIdentifier().toString());
// Use thrift transportable formatter
sessionConf.set(SerDeUtils.LIST_SINK_OUTPUT_FORMATTER, ThriftFormatter.class.getName());
sessionConf.setInt(SerDeUtils.LIST_SINK_OUTPUT_PROTOCOL, protocol.getValue());
}
@Override
/**
* Opens a new HiveServer2 session for the client connection.
* Creates a new SessionState object that will be associated with this HiveServer2 session.
* When the server executes multiple queries in the same session,
* this SessionState object is reused across multiple queries.
* Note that if doAs is true, this call goes through a proxy object,
* which wraps the method logic in a UserGroupInformation#doAs.
* That's why it is important to create SessionState here rather than in the constructor.
*/
public void open(Map<String, String> sessionConfMap) throws HiveSQLException {
sessionState = new SessionState(sessionConf, username);
sessionState.setUserIpAddress(ipAddress);
sessionState.setIsHiveServerQuery(true);
sessionState.setForwardedAddresses(SessionManager.getForwardedAddresses());
sessionState.setIsUsingThriftJDBCBinarySerDe(updateIsUsingThriftJDBCBinarySerDe());
SessionState.start(sessionState);
try {
sessionState.loadAuxJars();
sessionState.loadReloadableAuxJars();
} catch (IOException e) {
String msg = "Failed to load reloadable jar file path: " + e;
LOG.error(msg, e);
throw new HiveSQLException(msg, e);
}
try {
sessionHive = Hive.get(getHiveConf());
} catch (HiveException e) {
throw new HiveSQLException("Failed to get metastore connection", e);
}
// Process global init file: .hiverc
processGlobalInitFile();
// Set fetch size in session conf map
sessionConfMap = setFetchSize(sessionConfMap);
if (sessionConfMap != null) {
configureSession(sessionConfMap);
}
lastAccessTime = System.currentTimeMillis();
lastIdleTime = lastAccessTime;
}
/**
* It is used for processing hiverc file from HiveServer2 side.
*/
private class GlobalHivercFileProcessor extends HiveFileProcessor {
@Override
protected BufferedReader loadFile(String fileName) throws IOException {
FileInputStream initStream = null;
BufferedReader bufferedReader = null;
initStream = new FileInputStream(fileName);
bufferedReader = new BufferedReader(new InputStreamReader(initStream));
return bufferedReader;
}
@Override
protected int processCmd(String cmd) {
int rc = 0;
String cmd_trimed = cmd.trim();
OperationHandle opHandle = null;
try {
//execute in sync mode
opHandle = executeStatementInternal(cmd_trimed, null, false, 0);
} catch (HiveSQLException e) {
LOG.warn("Failed to execute command in global .hiverc file.", e);
return -1;
}
if (opHandle != null) {
try {
closeOperation(opHandle);
} catch (HiveSQLException e) {
LOG.warn("Failed to close operation for command in .hiverc file.", e);
}
}
return rc;
}
}
private void processGlobalInitFile() {
IHiveFileProcessor processor = new GlobalHivercFileProcessor();
try {
String hiverc = sessionConf.getVar(ConfVars.HIVE_SERVER2_GLOBAL_INIT_FILE_LOCATION);
if (hiverc != null) {
File hivercFile = new File(hiverc);
if (hivercFile.isDirectory()) {
hivercFile = new File(hivercFile, SessionManager.HIVERCFILE);
}
if (hivercFile.isFile()) {
LOG.info("Running global init file: " + hivercFile);
int rc = processor.processFile(hivercFile.getAbsolutePath());
if (rc != 0) {
LOG.error("Failed on initializing global .hiverc file");
}
} else {
LOG.debug("Global init file " + hivercFile + " does not exist");
}
}
} catch (IOException e) {
LOG.warn("Failed on initializing global .hiverc file", e);
}
}
private Map<String, String> setFetchSize(Map<String, String> sessionConfMap) {
int maxFetchSize =
sessionConf.getIntVar(HiveConf.ConfVars.HIVE_SERVER2_THRIFT_RESULTSET_MAX_FETCH_SIZE);
String confFetchSize = sessionConfMap != null ?
sessionConfMap.get(
"set:hiveconf:" + HiveConf.ConfVars.HIVE_SERVER2_THRIFT_RESULTSET_DEFAULT_FETCH_SIZE.varname) :
null;
if (confFetchSize != null && !confFetchSize.isEmpty()) {
int fetchSize = Integer.parseInt(confFetchSize);
sessionConfMap.put(
"set:hiveconf:" + HiveConf.ConfVars.HIVE_SERVER2_THRIFT_RESULTSET_DEFAULT_FETCH_SIZE.varname,
Integer.toString(fetchSize > maxFetchSize ? maxFetchSize : fetchSize));
}
return sessionConfMap;
}
private void configureSession(Map<String, String> sessionConfMap) throws HiveSQLException {
SessionState.setCurrentSessionState(sessionState);
for (Map.Entry<String, String> entry : sessionConfMap.entrySet()) {
String key = entry.getKey();
if (key.startsWith("set:")) {
try {
SetProcessor.setVariable(key.substring(4), entry.getValue());
} catch (Exception e) {
throw new HiveSQLException(e);
}
} else if (key.startsWith("use:")) {
try {
if (sessionHive.getDatabase(entry.getValue()) == null) {
throw new HiveSQLException("Database " + entry.getValue() + " does not exist");
}
} catch (HiveException e) {
throw new HiveSQLException(e);
}
SessionState.get().setCurrentDatabase(entry.getValue());
} else {
sessionConf.verifyAndSet(key, entry.getValue());
}
}
}
private boolean updateIsUsingThriftJDBCBinarySerDe() {
return (8 <= getProtocolVersion().getValue())
&& sessionConf.getBoolVar(HiveConf.ConfVars.HIVE_SERVER2_THRIFT_RESULTSET_SERIALIZE_IN_TASKS);
}
@Override
public void setOperationLogSessionDir(File operationLogRootDir) {
if (!operationLogRootDir.exists()) {
LOG.warn("The operation log root directory is removed, recreating:" +
operationLogRootDir.getAbsolutePath());
if (!operationLogRootDir.mkdirs()) {
LOG.warn("Unable to create operation log root directory: " +
operationLogRootDir.getAbsolutePath());
}
}
if (!operationLogRootDir.canWrite()) {
LOG.warn("The operation log root directory is not writable: " +
operationLogRootDir.getAbsolutePath());
}
sessionLogDir = new File(operationLogRootDir, sessionHandle.getHandleIdentifier().toString());
isOperationLogEnabled = true;
if (!sessionLogDir.exists()) {
if (!sessionLogDir.mkdir()) {
LOG.warn("Unable to create operation log session directory: " +
sessionLogDir.getAbsolutePath());
isOperationLogEnabled = false;
}
}
if (isOperationLogEnabled) {
LOG.info("Operation log session directory is created: " + sessionLogDir.getAbsolutePath());
}
}
@Override
public boolean isOperationLogEnabled() {
return isOperationLogEnabled;
}
@Override
public File getOperationLogSessionDir() {
return sessionLogDir;
}
@Override
public TProtocolVersion getProtocolVersion() {
return sessionHandle.getProtocolVersion();
}
@Override
public SessionManager getSessionManager() {
return sessionManager;
}
@Override
public void setSessionManager(SessionManager sessionManager) {
this.sessionManager = sessionManager;
}
private OperationManager getOperationManager() {
return operationManager;
}
@Override
public void setOperationManager(OperationManager operationManager) {
this.operationManager = operationManager;
}
protected void acquire(boolean userAccess, boolean isOperation) {
if (isOperation && operationLock != null) {
try {
operationLock.acquire();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException(e);
}
}
boolean success = false;
try {
acquireAfterOpLock(userAccess);
success = true;
} finally {
if (!success && isOperation && operationLock != null) {
operationLock.release();
}
}
}
private synchronized void acquireAfterOpLock(boolean userAccess) {
// Need to make sure that the this HiveServer2's session's SessionState is
// stored in the thread local for the handler thread.
SessionState.setCurrentSessionState(sessionState);
sessionState.setForwardedAddresses(SessionManager.getForwardedAddresses());
sessionState.setIsUsingThriftJDBCBinarySerDe(updateIsUsingThriftJDBCBinarySerDe());
if (userAccess) {
lastAccessTime = System.currentTimeMillis();
}
// set the thread name with the logging prefix.
sessionState.updateThreadName();
Hive.set(sessionHive);
activeCalls++;
lastIdleTime = 0;
}
/**
* 1. We'll remove the ThreadLocal SessionState as this thread might now serve
* other requests.
* 2. We'll cache the ThreadLocal RawStore object for this background thread for an orderly cleanup
* when this thread is garbage collected later.
* @see org.apache.hive.service.server.ThreadWithGarbageCleanup#finalize()
*/
protected void release(boolean userAccess, boolean isOperation) {
try {
releaseBeforeOpLock(userAccess);
} finally {
if (isOperation && operationLock != null) {
operationLock.release();
}
}
}
private synchronized void releaseBeforeOpLock(boolean userAccess) {
if (sessionState != null) {
// can be null in-case of junit tests. skip reset.
// reset thread name at release time.
sessionState.resetThreadName();
}
SessionState.detachSession();
if (ThreadWithGarbageCleanup.currentThread() instanceof ThreadWithGarbageCleanup) {
ThreadWithGarbageCleanup currentThread =
(ThreadWithGarbageCleanup) ThreadWithGarbageCleanup.currentThread();
currentThread.cacheThreadLocalRawStore();
}
if (userAccess) {
lastAccessTime = System.currentTimeMillis();
}
activeCalls--;
// lastIdleTime is only set by the last one
// who calls release with empty opHandleSet.
if (activeCalls == 0 && opHandleSet.isEmpty()) {
lastIdleTime = System.currentTimeMillis();
}
}
@Override
public SessionHandle getSessionHandle() {
return sessionHandle;
}
@Override
public String getPassword() {
return password;
}
@Override
public HiveConf getHiveConf() {
sessionConf.setVar(HiveConf.ConfVars.HIVEFETCHOUTPUTSERDE, FETCH_WORK_SERDE_CLASS);
return sessionConf;
}
@Override
public Hive getSessionHive() {
return sessionHive;
}
@Override
public IMetaStoreClient getMetaStoreClient() throws HiveSQLException {
try {
return getSessionHive().getMSC();
} catch (MetaException e) {
throw new HiveSQLException("Failed to get metastore connection: " + e, e);
}
}
@Override
public GetInfoValue getInfo(GetInfoType getInfoType)
throws HiveSQLException {
acquire(true, true);
try {
switch (getInfoType) {
case CLI_SERVER_NAME:
return new GetInfoValue("Hive");
case CLI_DBMS_NAME:
return new GetInfoValue("Apache Hive");
case CLI_DBMS_VER:
return new GetInfoValue(HiveVersionInfo.getVersion());
case CLI_MAX_COLUMN_NAME_LEN:
return new GetInfoValue(128);
case CLI_MAX_SCHEMA_NAME_LEN:
return new GetInfoValue(128);
case CLI_MAX_TABLE_NAME_LEN:
return new GetInfoValue(128);
case CLI_TXN_CAPABLE:
default:
throw new HiveSQLException("Unrecognized GetInfoType value: " + getInfoType.toString());
}
} finally {
release(true, true);
}
}
@Override
public HiveConf getSessionConf() throws HiveSQLException {
return this.sessionConf;
}
@Override
public OperationHandle executeStatement(String statement, Map<String, String> confOverlay) throws HiveSQLException {
return executeStatementInternal(statement, confOverlay, false, 0);
}
@Override
public OperationHandle executeStatement(String statement, Map<String, String> confOverlay,
long queryTimeout) throws HiveSQLException {
return executeStatementInternal(statement, confOverlay, false, queryTimeout);
}
@Override
public OperationHandle executeStatementAsync(String statement, Map<String, String> confOverlay) throws HiveSQLException {
return executeStatementInternal(statement, confOverlay, true, 0);
}
@Override
public OperationHandle executeStatementAsync(String statement, Map<String, String> confOverlay,
long queryTimeout) throws HiveSQLException {
return executeStatementInternal(statement, confOverlay, true, queryTimeout);
}
private OperationHandle executeStatementInternal(String statement,
Map<String, String> confOverlay, boolean runAsync, long queryTimeout) throws HiveSQLException {
acquire(true, true);
ExecuteStatementOperation operation = null;
OperationHandle opHandle = null;
try {
operation = getOperationManager().newExecuteStatementOperation(getSession(), statement,
confOverlay, runAsync, queryTimeout);
opHandle = operation.getHandle();
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
// Refering to SQLOperation.java, there is no chance that a HiveSQLException throws and the
// async background operation submits to thread pool successfully at the same time. So, Cleanup
// opHandle directly when got HiveSQLException
if (opHandle != null) {
removeOpHandle(opHandle);
getOperationManager().closeOperation(opHandle);
}
throw e;
} finally {
if (operation == null || operation.getBackgroundHandle() == null) {
release(true, true); // Not async, or wasn't submitted for some reason (failure, etc.)
} else {
releaseBeforeOpLock(true); // Release, but keep the lock (if present).
}
}
}
@Override
public Future<?> submitBackgroundOperation(Runnable work) {
return getSessionManager().submitBackgroundOperation(
operationLock == null ? work : new FutureTask<Void>(work, null) {
protected void done() {
// We assume this always comes from a user operation that took the lock.
operationLock.release();
};
});
}
@Override
public OperationHandle getTypeInfo()
throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
GetTypeInfoOperation operation = operationManager.newGetTypeInfoOperation(getSession());
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
@Override
public OperationHandle getCatalogs()
throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
GetCatalogsOperation operation = operationManager.newGetCatalogsOperation(getSession());
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
@Override
public OperationHandle getSchemas(String catalogName, String schemaName)
throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
GetSchemasOperation operation =
operationManager.newGetSchemasOperation(getSession(), catalogName, schemaName);
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
@Override
public OperationHandle getTables(String catalogName, String schemaName, String tableName,
List<String> tableTypes)
throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
MetadataOperation operation =
operationManager.newGetTablesOperation(getSession(), catalogName, schemaName, tableName, tableTypes);
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
@Override
public OperationHandle getTableTypes()
throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
GetTableTypesOperation operation = operationManager.newGetTableTypesOperation(getSession());
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
@Override
public OperationHandle getColumns(String catalogName, String schemaName,
String tableName, String columnName) throws HiveSQLException {
acquire(true, true);
String addedJars = Utilities.getResourceFiles(sessionConf, SessionState.ResourceType.JAR);
if (StringUtils.isNotBlank(addedJars)) {
IMetaStoreClient metastoreClient = getSession().getMetaStoreClient();
metastoreClient.setHiveAddedJars(addedJars);
}
OperationManager operationManager = getOperationManager();
GetColumnsOperation operation = operationManager.newGetColumnsOperation(getSession(),
catalogName, schemaName, tableName, columnName);
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
private void addOpHandle(OperationHandle opHandle) {
synchronized (opHandleSet) {
opHandleSet.add(opHandle);
}
}
private void removeOpHandle(OperationHandle opHandle) {
synchronized (opHandleSet) {
opHandleSet.remove(opHandle);
}
}
@Override
public OperationHandle getFunctions(String catalogName, String schemaName, String functionName)
throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
GetFunctionsOperation operation = operationManager
.newGetFunctionsOperation(getSession(), catalogName, schemaName, functionName);
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
@Override
public void close() throws HiveSQLException {
try {
acquire(true, false);
// Iterate through the opHandles and close their operations
List<OperationHandle> ops = null;
synchronized (opHandleSet) {
ops = new ArrayList<>(opHandleSet);
opHandleSet.clear();
}
for (OperationHandle opHandle : ops) {
operationManager.closeOperation(opHandle);
}
// Cleanup session log directory.
cleanupSessionLogDir();
HiveHistory hiveHist = sessionState.getHiveHistory();
if (null != hiveHist) {
hiveHist.closeStream();
}
try {
sessionState.resetThreadName();
sessionState.close();
} finally {
sessionState = null;
}
} catch (IOException ioe) {
throw new HiveSQLException("Failure to close", ioe);
} finally {
if (sessionState != null) {
try {
sessionState.resetThreadName();
sessionState.close();
} catch (Throwable t) {
LOG.warn("Error closing session", t);
}
sessionState = null;
}
if (sessionHive != null) {
try {
Hive.closeCurrent();
} catch (Throwable t) {
LOG.warn("Error closing sessionHive", t);
}
sessionHive = null;
}
release(true, false);
}
}
private void cleanupSessionLogDir() {
// In case of test, if we might not want to remove the log directory
if (isOperationLogEnabled && sessionConf.getBoolVar(ConfVars.HIVE_IN_TEST_REMOVE_LOGS)) {
try {
FileUtils.forceDelete(sessionLogDir);
LOG.info("Operation log session directory is deleted: "
+ sessionLogDir.getAbsolutePath());
} catch (Exception e) {
LOG.error("Failed to cleanup session log dir: " + sessionHandle, e);
}
}
}
@Override
public SessionState getSessionState() {
return sessionState;
}
@Override
public String getUserName() {
return username;
}
@Override
public void setUserName(String userName) {
this.username = userName;
}
@Override
public long getLastAccessTime() {
return lastAccessTime;
}
@Override
public long getCreationTime() {
return creationTime;
}
@Override
public void closeExpiredOperations() {
OperationHandle[] handles;
synchronized (opHandleSet) {
handles = opHandleSet.toArray(new OperationHandle[opHandleSet.size()]);
}
if (handles.length > 0) {
List<Operation> operations = operationManager.removeExpiredOperations(handles);
if (!operations.isEmpty()) {
closeTimedOutOperations(operations);
}
}
}
@Override
public long getNoOperationTime() {
return lastIdleTime > 0 ? System.currentTimeMillis() - lastIdleTime : 0;
}
private void closeTimedOutOperations(List<Operation> operations) {
acquire(false, false);
try {
for (Operation operation : operations) {
synchronized (opHandleSet) {
opHandleSet.remove(operation.getHandle());
}
try {
operation.close();
} catch (Exception e) {
LOG.warn("Exception is thrown closing timed-out operation, reported open_operations metrics may be incorrect " + operation.getHandle(), e);
}
}
} finally {
release(false, false);
}
}
@Override
public void cancelOperation(OperationHandle opHandle) throws HiveSQLException {
acquire(true, false);
try {
sessionManager.getOperationManager().cancelOperation(opHandle);
} finally {
release(true, false);
}
}
@Override
public void closeOperation(OperationHandle opHandle) throws HiveSQLException {
acquire(true, false);
try {
operationManager.closeOperation(opHandle);
synchronized (opHandleSet) {
opHandleSet.remove(opHandle);
}
} finally {
release(true, false);
}
}
@Override
public TableSchema getResultSetMetadata(OperationHandle opHandle) throws HiveSQLException {
acquire(true, true);
try {
return sessionManager.getOperationManager().getOperationResultSetSchema(opHandle);
} finally {
release(true, true);
}
}
@Override
public RowSet fetchResults(OperationHandle opHandle, FetchOrientation orientation,
long maxRows, FetchType fetchType) throws HiveSQLException {
acquire(true, false);
try {
if (fetchType == FetchType.QUERY_OUTPUT) {
return operationManager.getOperationNextRowSet(opHandle, orientation, maxRows);
}
return operationManager.getOperationLogRowSet(opHandle, orientation, maxRows, sessionConf);
} finally {
release(true, false);
}
}
protected HiveSession getSession() {
return this;
}
@Override
public int getOpenOperationCount() {
return opHandleSet.size();
}
@Override
public String getIpAddress() {
return ipAddress;
}
@Override
public void setIpAddress(String ipAddress) {
this.ipAddress = ipAddress;
}
@Override
public String getDelegationToken(HiveAuthFactory authFactory, String owner, String renewer)
throws HiveSQLException {
HiveAuthFactory.verifyProxyAccess(getUserName(), owner, getIpAddress(), getHiveConf());
return authFactory.getDelegationToken(owner, renewer, getIpAddress());
}
@Override
public void cancelDelegationToken(HiveAuthFactory authFactory, String tokenStr)
throws HiveSQLException {
HiveAuthFactory.verifyProxyAccess(getUserName(), getUserFromToken(authFactory, tokenStr),
getIpAddress(), getHiveConf());
authFactory.cancelDelegationToken(tokenStr);
}
@Override
public void renewDelegationToken(HiveAuthFactory authFactory, String tokenStr)
throws HiveSQLException {
HiveAuthFactory.verifyProxyAccess(getUserName(), getUserFromToken(authFactory, tokenStr),
getIpAddress(), getHiveConf());
authFactory.renewDelegationToken(tokenStr);
}
// extract the real user from the given token string
private String getUserFromToken(HiveAuthFactory authFactory, String tokenStr) throws HiveSQLException {
return authFactory.getUserFromToken(tokenStr);
}
@Override
public OperationHandle getPrimaryKeys(String catalog, String schema,
String table) throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
GetPrimaryKeysOperation operation = operationManager
.newGetPrimaryKeysOperation(getSession(), catalog, schema, table);
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
@Override
public OperationHandle getCrossReference(String primaryCatalog,
String primarySchema, String primaryTable, String foreignCatalog,
String foreignSchema, String foreignTable) throws HiveSQLException {
acquire(true, true);
OperationManager operationManager = getOperationManager();
GetCrossReferenceOperation operation = operationManager
.newGetCrossReferenceOperation(getSession(), primaryCatalog,
primarySchema, primaryTable, foreignCatalog,
foreignSchema, foreignTable);
OperationHandle opHandle = operation.getHandle();
try {
addOpHandle(opHandle);
operation.run();
return opHandle;
} catch (HiveSQLException e) {
removeOpHandle(opHandle);
operationManager.closeOperation(opHandle);
throw e;
} finally {
release(true, true);
}
}
}