org.apache.hadoop.hive.ql.exec.errors.ScriptErrorHeuristic Maven / Gradle / Ivy
/**
* 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.exec.errors;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Detects when a query has failed because a user's script that was specified in
* transform returns a non-zero error code.
*
* Conditions to check:
*
* 1. "Script failed with code " is in the log
*
*/
public class ScriptErrorHeuristic extends RegexErrorHeuristic {
private static final String FAILED_REGEX = "Script failed with code [0-9]+";
public ScriptErrorHeuristic() {
setQueryRegex(".*");
getLogRegexes().add(FAILED_REGEX);
}
@Override
public ErrorAndSolution getErrorAndSolution() {
ErrorAndSolution es = null;
if(getQueryMatches()) {
for(List matchingLines : getRegexToLogLines().values()) {
// There should really only be one line with "Script failed..."
if (matchingLines.size() > 0) {
assert(matchingLines.size() == 1);
// Get "Script failed with code "
Matcher m1 = Pattern.compile(FAILED_REGEX).matcher(matchingLines.get(0));
m1.find();
String failedStr = m1.group();
// Get ""
Matcher m2 = Pattern.compile("[0-9]+").matcher(failedStr);
m2.find();
String errorCode = m2.group();
es = new ErrorAndSolution(
"A user-supplied transfrom script has exited with error code " +
errorCode + " instead of 0.",
"Verify that the script can properly handle all the input rows " +
"without throwing exceptions and exits properly.");
}
}
}
reset();
return es;
}
}