zhangyubiao created MAPREDUCE-6542:
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Summary: HistoryViewer use SimpleDateFormat,But SimpleDateFormat
is not threadsafe
Key: MAPREDUCE-6542
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6542
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobhistoryserver
Affects Versions: 2.7.1, 2.2.0
Environment: CentOS6.5 Hadoop
Reporter: zhangyubiao
Fix For: 2.7.2
I use SimpleDateFormat to Parse the JobHistory File before
private static final SimpleDateFormat dateFormat =
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
public static String getJobDetail(JobInfo job) {
StringBuffer jobDetails = new StringBuffer("");
SummarizedJob ts = new SummarizedJob(job);
jobDetails.append(job.getJobId().toString().trim()).append("\t");
jobDetails.append(job.getUsername()).append("\t");
jobDetails.append(job.getJobname().replaceAll("\\n", "")).append("\t");
jobDetails.append(job.getJobQueueName()).append("\t");
jobDetails.append(job.getPriority()).append("\t");
jobDetails.append(job.getJobConfPath()).append("\t");
jobDetails.append(job.getUberized()).append("\t");
jobDetails.append(dateFormat.format(job.getSubmitTime())).append("\t");
jobDetails.append(dateFormat.format(job.getLaunchTime())).append("\t");
jobDetails.append(dateFormat.format(job.getFinishTime())).append("\t");
return jobDetails.toString();
}
But I find I query the SubmitTime and LaunchTime in hive and compare JobHistory
File time , I find that the submitTime and launchTime was wrong.
Finally,I chang to use the FastDateFormat to parse the time format and the time
become right
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