/**
* 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.hive.ql.hooks;
import java.util.List;
import java.util.Map.Entry;
import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.hive.ql.session.SessionState.LogHelper;
/**
*
* VerifySessionStateStackTracesHook.
*
* Writes the first line of each stack trace collected to the console, to either verify stack
* traces were or were not collected.
*/
public class VerifySessionStateStackTracesHook implements ExecuteWithHookContext {
public void run(HookContext hookContext) {
LogHelper console = SessionState.getConsole();
for (Entry<String, List<List<String>>> entry :
SessionState.get().getStackTraces().entrySet()) {
for (List<String> stackTrace : entry.getValue()) {
// Only print the first line of the stack trace as it contains the error message, and other
// lines may contain line numbers which are volatile
// Also only take the string after the first two spaces, because the prefix is a date and
// and time stamp
console.printError(StringUtils.substringAfter(
StringUtils.substringAfter(stackTrace.get(0), " "), " "));
}
}
}
}