/**
* 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.hadoop.hdfs;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CreateFlag;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.inotify.Event;
import org.apache.hadoop.hdfs.inotify.EventBatch;
import org.apache.hadoop.hdfs.inotify.MissingEventsException;
import org.apache.hadoop.hdfs.qjournal.MiniQJMHACluster;
import org.apache.hadoop.hdfs.server.namenode.FSEditLogOpCodes;
import org.apache.hadoop.hdfs.server.namenode.ha.HATestUtil;
import org.apache.hadoop.util.ExitUtil;
import org.junit.Assert;
import org.junit.Test;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URISyntaxException;
import java.util.EnumSet;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class TestDFSInotifyEventInputStream {
private static final int BLOCK_SIZE = 1024;
private static final Log LOG = LogFactory.getLog(
TestDFSInotifyEventInputStream.class);
private static EventBatch waitForNextEvents(DFSInotifyEventInputStream eis)
throws IOException, MissingEventsException {
EventBatch batch = null;
while ((batch = eis.poll()) == null);
return batch;
}
private static long checkTxid(EventBatch batch, long prevTxid){
Assert.assertTrue("Previous txid " + prevTxid + " was not less than " +
"new txid " + batch.getTxid(), prevTxid < batch.getTxid());
return batch.getTxid();
}
/**
* If this test fails, check whether the newly added op should map to an
* inotify event, and if so, establish the mapping in
* {@link org.apache.hadoop.hdfs.server.namenode.InotifyFSEditLogOpTranslator}
* and update testBasic() to include the new op.
*/
@Test
public void testOpcodeCount() {
Assert.assertEquals(50, FSEditLogOpCodes.values().length);
}
/**
* Tests all FsEditLogOps that are converted to inotify events.
*/
@Test(timeout = 120000)
@SuppressWarnings("deprecation")
public void testBasic() throws IOException, URISyntaxException,
InterruptedException, MissingEventsException {
Configuration conf = new HdfsConfiguration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCK_SIZE);
conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_ACLS_ENABLED_KEY, true);
// so that we can get an atime change
conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, 1);
MiniQJMHACluster.Builder builder = new MiniQJMHACluster.Builder(conf);
builder.getDfsBuilder().numDataNodes(2);
MiniQJMHACluster cluster = builder.build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
DFSClient client = new DFSClient(cluster.getDfsCluster().getNameNode(0)
.getNameNodeAddress(), conf);
FileSystem fs = cluster.getDfsCluster().getFileSystem(0);
DFSTestUtil.createFile(fs, new Path("/file"), BLOCK_SIZE, (short) 1, 0L);
DFSTestUtil.createFile(fs, new Path("/file3"), BLOCK_SIZE, (short) 1, 0L);
DFSTestUtil.createFile(fs, new Path("/file5"), BLOCK_SIZE, (short) 1, 0L);
DFSTestUtil.createFile(fs, new Path("/truncate_file"),
BLOCK_SIZE * 2, (short) 1, 0L);
DFSInotifyEventInputStream eis = client.getInotifyEventStream();
client.rename("/file", "/file4", null); // RenameOp -> RenameEvent
client.rename("/file4", "/file2"); // RenameOldOp -> RenameEvent
// DeleteOp, AddOp -> UnlinkEvent, CreateEvent
OutputStream os = client.create("/file2", true, (short) 2, BLOCK_SIZE);
os.write(new byte[BLOCK_SIZE]);
os.close(); // CloseOp -> CloseEvent
// AddOp -> AppendEvent
os = client.append("/file2", BLOCK_SIZE, EnumSet.of(CreateFlag.APPEND),
null, null);
os.write(new byte[BLOCK_SIZE]);
os.close(); // CloseOp -> CloseEvent
Thread.sleep(10); // so that the atime will get updated on the next line
client.open("/file2").read(new byte[1]); // TimesOp -> MetadataUpdateEvent
// SetReplicationOp -> MetadataUpdateEvent
client.setReplication("/file2", (short) 1);
// ConcatDeleteOp -> AppendEvent, UnlinkEvent, CloseEvent
client.concat("/file2", new String[]{"/file3"});
client.delete("/file2", false); // DeleteOp -> UnlinkEvent
client.mkdirs("/dir", null, false); // MkdirOp -> CreateEvent
// SetPermissionsOp -> MetadataUpdateEvent
client.setPermission("/dir", FsPermission.valueOf("-rw-rw-rw-"));
// SetOwnerOp -> MetadataUpdateEvent
client.setOwner("/dir", "username", "groupname");
client.createSymlink("/dir", "/dir2", false); // SymlinkOp -> CreateEvent
client.setXAttr("/file5", "user.field", "value".getBytes(), EnumSet.of(
XAttrSetFlag.CREATE)); // SetXAttrOp -> MetadataUpdateEvent
// RemoveXAttrOp -> MetadataUpdateEvent
client.removeXAttr("/file5", "user.field");
// SetAclOp -> MetadataUpdateEvent
client.setAcl("/file5", AclEntry.parseAclSpec(
"user::rwx,user:foo:rw-,group::r--,other::---", true));
client.removeAcl("/file5"); // SetAclOp -> MetadataUpdateEvent
client.rename("/file5", "/dir"); // RenameOldOp -> RenameEvent
//TruncateOp -> TruncateEvent
client.truncate("/truncate_file", BLOCK_SIZE);
EventBatch batch = null;
// RenameOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
long txid = batch.getTxid();
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.RENAME);
Event.RenameEvent re = (Event.RenameEvent) batch.getEvents()[0];
Assert.assertEquals("/file4", re.getDstPath());
Assert.assertEquals("/file", re.getSrcPath());
Assert.assertTrue(re.getTimestamp() > 0);
LOG.info(re.toString());
Assert.assertTrue(re.toString().startsWith("RenameEvent [srcPath="));
long eventsBehind = eis.getTxidsBehindEstimate();
// RenameOldOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.RENAME);
Event.RenameEvent re2 = (Event.RenameEvent) batch.getEvents()[0];
Assert.assertTrue(re2.getDstPath().equals("/file2"));
Assert.assertTrue(re2.getSrcPath().equals("/file4"));
Assert.assertTrue(re2.getTimestamp() > 0);
LOG.info(re2.toString());
// AddOp with overwrite
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CREATE);
Event.CreateEvent ce = (Event.CreateEvent) batch.getEvents()[0];
Assert.assertTrue(ce.getiNodeType() == Event.CreateEvent.INodeType.FILE);
Assert.assertTrue(ce.getPath().equals("/file2"));
Assert.assertTrue(ce.getCtime() > 0);
Assert.assertTrue(ce.getReplication() > 0);
Assert.assertTrue(ce.getSymlinkTarget() == null);
Assert.assertTrue(ce.getOverwrite());
Assert.assertEquals(BLOCK_SIZE, ce.getDefaultBlockSize());
LOG.info(ce.toString());
Assert.assertTrue(ce.toString().startsWith("CreateEvent [INodeType="));
// CloseOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CLOSE);
Event.CloseEvent ce2 = (Event.CloseEvent) batch.getEvents()[0];
Assert.assertTrue(ce2.getPath().equals("/file2"));
Assert.assertTrue(ce2.getFileSize() > 0);
Assert.assertTrue(ce2.getTimestamp() > 0);
LOG.info(ce2.toString());
Assert.assertTrue(ce2.toString().startsWith("CloseEvent [path="));
// AppendOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.APPEND);
Event.AppendEvent append2 = (Event.AppendEvent)batch.getEvents()[0];
Assert.assertEquals("/file2", append2.getPath());
Assert.assertFalse(append2.toNewBlock());
LOG.info(append2.toString());
Assert.assertTrue(append2.toString().startsWith("AppendEvent [path="));
// CloseOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CLOSE);
Assert.assertTrue(((Event.CloseEvent) batch.getEvents()[0]).getPath().equals("/file2"));
// TimesOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue.getPath().equals("/file2"));
Assert.assertTrue(mue.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.TIMES);
LOG.info(mue.toString());
Assert.assertTrue(mue.toString().startsWith("MetadataUpdateEvent [path="));
// SetReplicationOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue2 = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue2.getPath().equals("/file2"));
Assert.assertTrue(mue2.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.REPLICATION);
Assert.assertTrue(mue2.getReplication() == 1);
LOG.info(mue2.toString());
// ConcatDeleteOp
batch = waitForNextEvents(eis);
Assert.assertEquals(3, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.APPEND);
Assert.assertTrue(((Event.AppendEvent) batch.getEvents()[0]).getPath().equals("/file2"));
Assert.assertTrue(batch.getEvents()[1].getEventType() == Event.EventType.UNLINK);
Event.UnlinkEvent ue2 = (Event.UnlinkEvent) batch.getEvents()[1];
Assert.assertTrue(ue2.getPath().equals("/file3"));
Assert.assertTrue(ue2.getTimestamp() > 0);
LOG.info(ue2.toString());
Assert.assertTrue(ue2.toString().startsWith("UnlinkEvent [path="));
Assert.assertTrue(batch.getEvents()[2].getEventType() == Event.EventType.CLOSE);
Event.CloseEvent ce3 = (Event.CloseEvent) batch.getEvents()[2];
Assert.assertTrue(ce3.getPath().equals("/file2"));
Assert.assertTrue(ce3.getTimestamp() > 0);
// DeleteOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.UNLINK);
Event.UnlinkEvent ue = (Event.UnlinkEvent) batch.getEvents()[0];
Assert.assertTrue(ue.getPath().equals("/file2"));
Assert.assertTrue(ue.getTimestamp() > 0);
LOG.info(ue.toString());
// MkdirOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CREATE);
Event.CreateEvent ce4 = (Event.CreateEvent) batch.getEvents()[0];
Assert.assertTrue(ce4.getiNodeType() ==
Event.CreateEvent.INodeType.DIRECTORY);
Assert.assertTrue(ce4.getPath().equals("/dir"));
Assert.assertTrue(ce4.getCtime() > 0);
Assert.assertTrue(ce4.getReplication() == 0);
Assert.assertTrue(ce4.getSymlinkTarget() == null);
LOG.info(ce4.toString());
// SetPermissionsOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue3 = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue3.getPath().equals("/dir"));
Assert.assertTrue(mue3.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.PERMS);
Assert.assertTrue(mue3.getPerms().toString().contains("rw-rw-rw-"));
LOG.info(mue3.toString());
// SetOwnerOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue4 = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue4.getPath().equals("/dir"));
Assert.assertTrue(mue4.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.OWNER);
Assert.assertTrue(mue4.getOwnerName().equals("username"));
Assert.assertTrue(mue4.getGroupName().equals("groupname"));
LOG.info(mue4.toString());
// SymlinkOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CREATE);
Event.CreateEvent ce5 = (Event.CreateEvent) batch.getEvents()[0];
Assert.assertTrue(ce5.getiNodeType() ==
Event.CreateEvent.INodeType.SYMLINK);
Assert.assertTrue(ce5.getPath().equals("/dir2"));
Assert.assertTrue(ce5.getCtime() > 0);
Assert.assertTrue(ce5.getReplication() == 0);
Assert.assertTrue(ce5.getSymlinkTarget().equals("/dir"));
LOG.info(ce5.toString());
// SetXAttrOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue5 = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue5.getPath().equals("/file5"));
Assert.assertTrue(mue5.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.XATTRS);
Assert.assertTrue(mue5.getxAttrs().size() == 1);
Assert.assertTrue(mue5.getxAttrs().get(0).getName().contains("field"));
Assert.assertTrue(!mue5.isxAttrsRemoved());
LOG.info(mue5.toString());
// RemoveXAttrOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue6 = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue6.getPath().equals("/file5"));
Assert.assertTrue(mue6.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.XATTRS);
Assert.assertTrue(mue6.getxAttrs().size() == 1);
Assert.assertTrue(mue6.getxAttrs().get(0).getName().contains("field"));
Assert.assertTrue(mue6.isxAttrsRemoved());
LOG.info(mue6.toString());
// SetAclOp (1)
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue7 = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue7.getPath().equals("/file5"));
Assert.assertTrue(mue7.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.ACLS);
Assert.assertTrue(mue7.getAcls().contains(
AclEntry.parseAclEntry("user::rwx", true)));
LOG.info(mue7.toString());
// SetAclOp (2)
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.METADATA);
Event.MetadataUpdateEvent mue8 = (Event.MetadataUpdateEvent) batch.getEvents()[0];
Assert.assertTrue(mue8.getPath().equals("/file5"));
Assert.assertTrue(mue8.getMetadataType() ==
Event.MetadataUpdateEvent.MetadataType.ACLS);
Assert.assertTrue(mue8.getAcls() == null);
LOG.info(mue8.toString());
// RenameOp (2)
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.RENAME);
Event.RenameEvent re3 = (Event.RenameEvent) batch.getEvents()[0];
Assert.assertTrue(re3.getDstPath().equals("/dir/file5"));
Assert.assertTrue(re3.getSrcPath().equals("/file5"));
Assert.assertTrue(re3.getTimestamp() > 0);
LOG.info(re3.toString());
// TruncateOp
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
txid = checkTxid(batch, txid);
Assert
.assertTrue(batch.getEvents()[0].getEventType() ==
Event.EventType.TRUNCATE);
Event.TruncateEvent et = ((Event.TruncateEvent) batch.getEvents()[0]);
Assert.assertTrue(et.getPath().equals("/truncate_file"));
Assert.assertTrue(et.getFileSize() == BLOCK_SIZE);
Assert.assertTrue(et.getTimestamp() > 0);
LOG.info(et.toString());
Assert.assertTrue(et.toString().startsWith("TruncateEvent [path="));
// Returns null when there are no further events
Assert.assertTrue(eis.poll() == null);
// make sure the estimate hasn't changed since the above assertion
// tells us that we are fully caught up to the current namesystem state
// and we should not have been behind at all when eventsBehind was set
// either, since there were few enough events that they should have all
// been read to the client during the first poll() call
Assert.assertTrue(eis.getTxidsBehindEstimate() == eventsBehind);
} finally {
cluster.shutdown();
}
}
@Test(timeout = 120000)
public void testNNFailover() throws IOException, URISyntaxException,
MissingEventsException {
Configuration conf = new HdfsConfiguration();
MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
DFSClient client = ((DistributedFileSystem) HATestUtil.configureFailoverFs
(cluster.getDfsCluster(), conf)).dfs;
DFSInotifyEventInputStream eis = client.getInotifyEventStream();
for (int i = 0; i < 10; i++) {
client.mkdirs("/dir" + i, null, false);
}
cluster.getDfsCluster().shutdownNameNode(0);
cluster.getDfsCluster().transitionToActive(1);
EventBatch batch = null;
// we can read all of the edits logged by the old active from the new
// active
for (int i = 0; i < 10; i++) {
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CREATE);
Assert.assertTrue(((Event.CreateEvent) batch.getEvents()[0]).getPath().equals("/dir" +
i));
}
Assert.assertTrue(eis.poll() == null);
} finally {
cluster.shutdown();
}
}
@Test(timeout = 120000)
public void testTwoActiveNNs() throws IOException, MissingEventsException {
Configuration conf = new HdfsConfiguration();
MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
DFSClient client0 = new DFSClient(cluster.getDfsCluster().getNameNode(0)
.getNameNodeAddress(), conf);
DFSClient client1 = new DFSClient(cluster.getDfsCluster().getNameNode(1)
.getNameNodeAddress(), conf);
DFSInotifyEventInputStream eis = client0.getInotifyEventStream();
for (int i = 0; i < 10; i++) {
client0.mkdirs("/dir" + i, null, false);
}
cluster.getDfsCluster().transitionToActive(1);
for (int i = 10; i < 20; i++) {
client1.mkdirs("/dir" + i, null, false);
}
// make sure that the old active can't read any further than the edits
// it logged itself (it has no idea whether the in-progress edits from
// the other writer have actually been committed)
EventBatch batch = null;
for (int i = 0; i < 10; i++) {
batch = waitForNextEvents(eis);
Assert.assertEquals(1, batch.getEvents().length);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CREATE);
Assert.assertTrue(((Event.CreateEvent) batch.getEvents()[0]).getPath().equals("/dir" +
i));
}
Assert.assertTrue(eis.poll() == null);
} finally {
try {
cluster.shutdown();
} catch (ExitUtil.ExitException e) {
// expected because the old active will be unable to flush the
// end-of-segment op since it is fenced
}
}
}
@Test(timeout = 120000)
public void testReadEventsWithTimeout() throws IOException,
InterruptedException, MissingEventsException {
Configuration conf = new HdfsConfiguration();
MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).build();
try {
cluster.getDfsCluster().waitActive();
cluster.getDfsCluster().transitionToActive(0);
final DFSClient client = new DFSClient(cluster.getDfsCluster()
.getNameNode(0).getNameNodeAddress(), conf);
DFSInotifyEventInputStream eis = client.getInotifyEventStream();
ScheduledExecutorService ex = Executors
.newSingleThreadScheduledExecutor();
ex.schedule(new Runnable() {
@Override
public void run() {
try {
client.mkdirs("/dir", null, false);
} catch (IOException e) {
// test will fail
LOG.error("Unable to create /dir", e);
}
}
}, 1, TimeUnit.SECONDS);
// a very generous wait period -- the edit will definitely have been
// processed by the time this is up
EventBatch batch = eis.poll(5, TimeUnit.SECONDS);
Assert.assertNotNull(batch);
Assert.assertEquals(1, batch.getEvents().length);
Assert.assertTrue(batch.getEvents()[0].getEventType() == Event.EventType.CREATE);
Assert.assertEquals("/dir", ((Event.CreateEvent) batch.getEvents()[0]).getPath());
} finally {
cluster.shutdown();
}
}
}