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https://issues.apache.org/jira/browse/HBASE-4798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151622#comment-13151622
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stack commented on HBASE-4798:
------------------------------
On the patch, convention is spaces around operators as in 'zooKeeper != null'
rather than 'zooKeeper!=null' or 'previousLogTime =
System.currentTimeMillis();' rather than 'previousLogTime
=System.currentTimeMillis();'. No biggie. Next time.
We don't want to let these out (What does sleeper.sleep() do?)
{code}
+ try {
+ Thread.sleep(100);
+ } catch (InterruptedException ignored) {
+ }
{code}
Its looks like you are copying the above from elsewhere in the code; i.e. not
yours originally.... but if possible, lets let it out?
What changed here (white space?):
{code}
- if(ZKUtil.watchAndCheckExists(watcher, node)) {
- byte [] data = ZKUtil.getDataAndWatch(watcher, node);
- if(data != null) {
+ if (ZKUtil.watchAndCheckExists(watcher, node)) {
+ byte[] data = ZKUtil.getDataAndWatch(watcher, node);
+ if (data != null) {
{code}
Patch looks good otherwise. Would commit if all tests passed.
> 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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