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https://issues.apache.org/jira/browse/HDFS-15704?focusedWorklogId=518737&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-518737
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ASF GitHub Bot logged work on HDFS-15704:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 02/Dec/20 03:01
Start Date: 02/Dec/20 03:01
Worklog Time Spent: 10m
Work Description: amahussein opened a new pull request #2511:
URL: https://github.com/apache/hadoop/pull/2511
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Issue Time Tracking
-------------------
Worklog Id: (was: 518737)
Remaining Estimate: 0h
Time Spent: 10m
> 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
> Time Spent: 10m
> 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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