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https://issues.apache.org/jira/browse/HDFS-15704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HDFS-15704 started by Ahmed Hussein.
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> Mitigate lease monitor's rapid infinite loop
> --------------------------------------------
>
> Key: HDFS-15704
> URL: https://issues.apache.org/jira/browse/HDFS-15704
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Major
>
> [~daryn] reported that the lease monitor goes into a rapid infinite loop if
> an exception occurs during a lease recovery. The two main issues are:
> # lease monitor thread does not sleep if an exception occurs before looping
> again
> # the loop peeks at the first element of a sorted tree set so when an
> exception occurs, the "bad" lease remains as the first element preventing
> recovery of other leases.
> This jira is not intended to fix the underlying issues causing the exception
> during recovery but merely to mitigate the cited issues.
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