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https://issues.apache.org/jira/browse/HBASE-14370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908314#comment-14908314
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Hudson commented on HBASE-14370:
--------------------------------
SUCCESS: Integrated in HBase-1.3-IT #182 (See
[https://builds.apache.org/job/HBase-1.3-IT/182/])
HBASE-14370 Use separate thread for calling ZKPermissionWatcher#refreshNodes()
(tedyu: rev 52188c5c4a55483bea229c77ab37b9bcbe9b3623)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/ZKPermissionWatcher.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestTablePermissions.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/SecureTestUtil.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/TableAuthManager.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestZKPermissionsWatcher.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController3.java
> Use separate thread for calling ZKPermissionWatcher#refreshNodes()
> ------------------------------------------------------------------
>
> Key: HBASE-14370
> URL: https://issues.apache.org/jira/browse/HBASE-14370
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0
> Reporter: Ted Yu
> Assignee: Ted Yu
> Fix For: 2.0.0, 1.3.0, 0.98.15
>
> Attachments: 14370-0.98-v10.txt, 14370-branch-1-v10.txt,
> 14370-branch-1-v10.txt, 14370-branch-1-v10.txt, 14370-v1.txt, 14370-v10.txt,
> 14370-v3.txt, 14370-v5.txt, 14370-v7.txt, 14370-v8.txt,
> 14370-wait-nofity-v2.txt, 14370-wait-nofity.txt, hbase-14370_v4.patch,
> test-acl3-branch-1.stack
>
>
> I came off a support case (0.98.0) where main zk thread was seen doing the
> following:
> {code}
> at
> org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.refreshAuthManager(ZKPermissionWatcher.java:152)
> at
> org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.refreshNodes(ZKPermissionWatcher.java:135)
> at
> org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.nodeChildrenChanged(ZKPermissionWatcher.java:121)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:348)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
> {code}
> There were 62000 nodes under /acl due to lack of fix from HBASE-12635,
> leading to slowness in table creation because zk notification for region
> offline was blocked by the above.
> The attached patch separates refreshNodes() call into its own thread.
> Thanks to Enis and Devaraj for offline discussion.
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