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https://issues.apache.org/jira/browse/OOZIE-1826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Kanter updated OOZIE-1826:
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Attachment: OOZIE-1826.patch
The patch adds a new "JvmPauseMonitorService". Most of the code is copy-pasted
from HADOOP-9618; I made some changes for the configs, to make it an Oozie
Service, added instrumentation, and formatting.
There's two config properties that let you set the threshold for logging a WARN
level message and an INFO level message. There's also instrumentation counters
for each of them. I also added an instrumentation counter for the total amount
of extra time sleeping.
No tests because it would be difficult to write a unit test for this, but I did
verify that it appeared to be working properly; plus Hadoop and HBase have been
using it.
> Add thread which detects JVM pauses
> -----------------------------------
>
> Key: OOZIE-1826
> URL: https://issues.apache.org/jira/browse/OOZIE-1826
> Project: Oozie
> Issue Type: Improvement
> Components: core
> Affects Versions: trunk
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Attachments: OOZIE-1826.patch
>
>
> It would be helpful for debugging to add a thread which detects JVM pauses
> and logs them and indicates them in the instrumentation/metrics). This was
> added to Hadoop by HADOOP-9618 (and also HBASE by HBASE-9630), so we can
> adapt that for Oozie.
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