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Posted to issues@hbase.apache.org by "Javier Akira Luca de Tena (Jira)" <ji...@apache.org> on 2021/02/22 11:55:00 UTC
[jira] [Updated] (HBASE-25594) graceful_stop.sh fails to unload
regions when ran at localhost
[ https://issues.apache.org/jira/browse/HBASE-25594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Javier Akira Luca de Tena updated HBASE-25594:
----------------------------------------------
Affects Version/s: 1.4.13
> graceful_stop.sh fails to unload regions when ran at localhost
> --------------------------------------------------------------
>
> Key: HBASE-25594
> URL: https://issues.apache.org/jira/browse/HBASE-25594
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.4.13
> Reporter: Javier Akira Luca de Tena
> Assignee: Javier Akira Luca de Tena
> Priority: Minor
>
> We usually use graceful_stop.sh from the Master to restart RegionServers. However, in some scenarios we may not have privileges to restart remote RegionServers (it uses ssh).
> But we can still use graceful_stop.sh on the same host we want to restart.
> In order to detect the execution at localhost, graceful_stop.sh uses /bin/hostname.
> [https://github.com/apache/hbase/blob/cfbae4d3a37e7ac4d795461c3e19406a2786838d/bin/graceful_stop.sh#L106-L110]
> When RegionMover strips the host to not include it in the list of target hosts, we filter it out by checking all RegionServer hosts in the cluster:
> [https://github.com/apache/hbase/blob/branch-2/hbase-server/src/main/java/org/apache/hadoop/hbase/util/RegionMover.java#L382-L384]
> [https://github.com/apache/hbase/blob/cfbae4d3a37e7ac4d795461c3e19406a2786838d/hbase-server/src/main/java/org/apache/hadoop/hbase/util/RegionMover.java#L692]
> But the list of RegionServer hosts returned by Admin#getRegionServers are FDQN, while the hostname provided from graceful_stop.sh is not FDQN, making the comparison fail.
>
> This can be fixed just by using "/bin/hostname -f" in the graceful_stop.sh script.
> Will provide patch soon.
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