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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4798) Sleeps and synchronisation improvements for tests
Date Thu, 17 Nov 2011 00:01:51 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151656#comment-13151656
] 

stack commented on HBASE-4798:
------------------------------

I confirm cluster should be fully available though root is corrupted.  Its supposed to fail
validating the root location then move on to unset and reassign root.
                
> Sleeps and synchronisation improvements for tests
> -------------------------------------------------
>
>                 Key: HBASE-4798
>                 URL: https://issues.apache.org/jira/browse/HBASE-4798
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver, test
>    Affects Versions: 0.94.0
>         Environment: all
>            Reporter: nkeywal
>            Assignee: nkeywal
>            Priority: Minor
>         Attachments: 4798_trunk_all.v2.patch
>
>
> Multiple small changes:
> @commiters: Removing some sleeps made visible a bug on JVMClusterUtil#HMaster#waitForServerOnline,
so I had to add a synchro point. You may want to review this.
> JVMClusterUtil#HMaster#waitForServerOnline: removed, the condition was never met (test
on "!c && !!c"). Added a new synchronization point.
> AssignementManager#waitForAssignment: add a timeout on the wait => not stuck if the
notification is received before the wait.
> HMaster#loop: use a notification instead of a 1s sleep
> HRegionServer#waitForServerOnline: new method used by JVMClusterUtil#waitForServerOnline()
to replace a 1s sleep by a notification
> HRegionServer#getMaster() 1s sleeps replaced by one 0,1s sleep and one 0,2s sleep
> HRegionServer#stop: use a notification on sleeper to lower shutdown by 0,5s
> ZooKeeperNodeTracker#start: replace a recursive call by a loop
> ZooKeeperNodeTracker#blockUntilAvailable: add a timeout on the wait => not stuck if
the notification is received before the wait.
> HBaseTestingUtility#expireSession: use a timeout of 1s instead of 5s
> TestZooKeeper#testClientSessionExpired: use a timeout of 1s instead of 5s, with the change
on HBaseTestingUtility we are 60s faster
> TestRegionRebalancing#waitForAllRegionsAssigned: use a sleep of 0,2s instead of 1s
> TestRestartCluster#testClusterRestart: send all the table creation together, then check
creation, should be faster
> TestHLog: shutdown the whole cluster instead of DFS only (more standard) 
> JVMClusterUtil#startup: lower the sleep from 1s to 0,1s
> HConnectionManager#close: Zookeeper name in debug message from HConnectionManager after
connection close was always null because it was set to null in the delete.

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