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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2013/02/05 05:01:34 UTC
[jira] [Commented] (HBASE-7715) FSUtils#waitOnSafeMode can
incorrectly loop on standby NN
[ https://issues.apache.org/jira/browse/HBASE-7715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13570969#comment-13570969 ]
Hudson commented on HBASE-7715:
-------------------------------
Integrated in HBase-0.94-security-on-Hadoop-23 #11 (See [https://builds.apache.org/job/HBase-0.94-security-on-Hadoop-23/11/])
HBASE-7715 FSUtils#waitOnSafeMode can incorrectly loop on standby NN (Ted Yu) (Revision 1440779)
Result = FAILURE
tedyu :
Files :
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/util/FSUtils.java
> FSUtils#waitOnSafeMode can incorrectly loop on standby NN
> ---------------------------------------------------------
>
> Key: HBASE-7715
> URL: https://issues.apache.org/jira/browse/HBASE-7715
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.4
> Reporter: Andrew Wang
> Assignee: Ted Yu
> Fix For: 0.96.0, 0.94.5
>
> Attachments: 7715-94.txt, 7715-trunk-v2.txt, 7715-trunk-v3.txt
>
>
> We encountered an issue where HMaster failed to start with an active NN not in safe mode and a standby NN in safemode. The relevant lines in {{FSUtils.java}} show the issue:
> {noformat}
> while (dfs.setSafeMode(org.apache.hadoop.hdfs.protocol.FSConstants.SafeModeAction.SAFEMODE_GET)) {
> {noformat}
> This call skips the normal client failover from the standby to active NN, so it will loop polling the standby NN if it unfortunately talks to the standby first.
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