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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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Jim Brennan resolved HDFS-15704.
--------------------------------
Fix Version/s: 3.2.3
3.1.5
3.4.0
3.3.1
Resolution: Fixed
Thanks for the contribution [~daryn] and [~ahussein]! I have committed this to
trunk, branch-3.3, branch-3.2, and branch-3.1.
> 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
> Labels: pull-request-available
> Fix For: 3.3.1, 3.4.0, 3.1.5, 3.2.3
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> [~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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