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https://issues.apache.org/jira/browse/HADOOP-4957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12659896#action_12659896
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Konstantin Shvachko commented on HADOOP-4957:
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I propose:
# lease monitor should catch all exceptions log an error and continue to run
until name-node is running;
# lease monitor should loop until the name-node is {{FSNamesystem.fsRunning}};
# we should check other name-node monitors to do the same thing; better create
a base class for monitors implementing this logic.
# we should also take care of the of converting FileUnderConstruction into real
files as stated in
https://issues.apache.org/jira/browse/HADOOP-4795?focusedCommentId=12655006#action_12655006
> Lease monitor should not fail on a live name-node.
> --------------------------------------------------
>
> Key: HADOOP-4957
> URL: https://issues.apache.org/jira/browse/HADOOP-4957
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.18.3
> Reporter: Konstantin Shvachko
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.20.0
>
>
> If a runtime exception is thrown inside the lease monitor, as it happened in
> HADOOP-4951, the monitor will die although the name-node will continue to
> run. The problem is that abandoned files will not be garbage collected.
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