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Posted to hdfs-issues@hadoop.apache.org by "Lei (Eddy) Xu (JIRA)" <ji...@apache.org> on 2016/08/02 18:24:20 UTC
[jira] [Updated] (HDFS-4176) EditLogTailer should call rollEdits
with a timeout
[ https://issues.apache.org/jira/browse/HDFS-4176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lei (Eddy) Xu updated HDFS-4176:
--------------------------------
Attachment: HDFS-4176-branch-2.2.patch
Update the patch, fix {{TestHdfsConfigFields}}.
[~jingzhao] would be much appreciated to have another review.
> EditLogTailer should call rollEdits with a timeout
> --------------------------------------------------
>
> Key: HDFS-4176
> URL: https://issues.apache.org/jira/browse/HDFS-4176
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha, namenode
> Affects Versions: 2.0.2-alpha, 3.0.0-alpha1
> Reporter: Todd Lipcon
> Assignee: Lei (Eddy) Xu
> Attachments: HDFS-4176-branch-2.0.patch, HDFS-4176-branch-2.1.patch, HDFS-4176-branch-2.2.patch, HDFS-4176.00.patch, HDFS-4176.01.patch, HDFS-4176.02.patch, HDFS-4176.03.patch, HDFS-4176.04.patch, namenode.jstack4
>
>
> When the EditLogTailer thread calls rollEdits() on the active NN via RPC, it currently does so without a timeout. So, if the active NN has frozen (but not actually crashed), this call can hang forever. This can then potentially prevent the standby from becoming active.
> This may actually considered a side effect of HADOOP-6762 -- if the RPC were interruptible, that would also fix the issue.
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