[ https://issues.apache.org/jira/browse/ACCUMULO-1049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13579497#comment-13579497 ]
Eric Newton commented on ACCUMULO-1049: --------------------------------------- The master seems to not notice when tablet servers go away. I have to restart it. I'm testing using the continuous ingest test, killing 1-3 servers every 2 5 minutes with 2 minutes between restarts. > Master does not need to get tserver lock > ---------------------------------------- > > Key: ACCUMULO-1049 > URL: https://issues.apache.org/jira/browse/ACCUMULO-1049 > Project: Accumulo > Issue Type: Improvement > Components: master > Affects Versions: 1.4.0 > Reporter: Keith Turner > Assignee: Keith Turner > Fix For: 1.5.0, 1.4.3 > > > Every tserver has a lock in zookeeper. The master tries to get this lock and > when it does it assumes the tserver is dead. It seems like this may no > longer be necessary since changes made in 1.3. The master used to only keep > track of ip and port to identify a tablet server. It needed to know when it > got the lock to detect the difference between two tablet server instances at > the same ip and port. > Since 1.3 the master keeps distinctive info about a tablet server now and can > detect the difference between tablet server instances. Making the master > just monitor the current tablet server locks instead of trying to get the > lock would simplify the master code. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira