HistoryViewer throws IndexOutOfBoundsException when there are files or
directories not confrming to log file name convention
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Key: HADOOP-5149
URL: https://issues.apache.org/jira/browse/HADOOP-5149
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.21.0
Reporter: Hong Tang
Priority: Minor
When running history viewer in local mode (specifying file:///<path/to/hodlogs>
as path to logs), it throws IndexOutOfBoundsException due to the following code:
{code}
String[] jobDetails =
JobInfo.decodeJobHistoryFileName(jobFiles[0].getName()).split("_");
trackerHostName = jobDetails[0];
trackerStartTime = jobDetails[1];
{code}
The reason is because there are some directories under the log directories that
do not conform to the log file naming convention, and the length of the
jobDetails array is 1.
History viewer should be more defensive and ignore (possibly with warning)
files or directories that it does not recognize.
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