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Peter Somogyi reopened HBASE-25594: ----------------------------------- The commit has an incorrect Jira ID, let me fix it. > 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: 3.0.0-alpha-1, 1.4.13 > Reporter: Javier Akira Luca de Tena > Assignee: Javier Akira Luca de Tena > Priority: Minor > Fix For: 3.0.0-alpha-1, 2.5.0, 2.4.3 > > > 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. > Same happens for branch-1 region_mover.rb, which is the place I reproduced in > my environment: > [https://github.com/apache/hbase/blob/f9a91488b2c39320bed502619bf7adb765c79de6/bin/region_mover.rb#L305] > [https://github.com/apache/hbase/blob/f9a91488b2c39320bed502619bf7adb765c79de6/bin/region_mover.rb#L175] > > [https://github.com/apache/hbase/blob/f9a91488b2c39320bed502619bf7adb765c79de6/bin/region_mover.rb#L186-L192] > > This can be fixed just by using "/bin/hostname -f" in the graceful_stop.sh > script. > Will provide patch soon. -- This message was sent by Atlassian Jira (v8.3.4#803005)