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https://issues.apache.org/jira/browse/HBASE-3238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13011297#comment-13011297
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Alex Newman commented on HBASE-3238:
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> Is there a create that works even if node already exists?
I talked to henry today, we either need to catch it(Which will catch a larger
set of acl exceptions), or check exists first (which may have performance
implications). Alternatively we can make our API more fine grained and replace
all the create /home.dir calls with this new fine grained call. He suggested we
catch this exception. Also do we think it should be createOrFailSilent not and
fail silent?
> What is this '+ * @param str String to amend. -1'
Me being retarded, it's now removed.
> When you say above that it limits to write under /hbase, you don't mean
> exactly /hbase, you mean whatever is configured as cluster home in zk?
Correct I clarified the comment.
> HBase needs to have the CREATE permission on the parent of its ZooKeeper
> parent znode
> -------------------------------------------------------------------------------------
>
> Key: HBASE-3238
> URL: https://issues.apache.org/jira/browse/HBASE-3238
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.0
> Reporter: Mathias Herberts
> Assignee: Alex Newman
> Priority: Blocker
> Attachments: 1, HBASE-3238-v2.patch, HBASE-3238.patch
>
>
> Upon startup, HBase attempts to create its zookeeper.parent.znode in
> ZooKeeper, it does so using ZKUtil.createAndFailSilent which as its name
> seems to imply will fail silent if the znode exists. But if HBase does not
> have the CREATE permission on its zookeeper.parent.znode parent znode then
> the create attempt will fail with a
> org.apache.zookeeper.KeeperException$NoAuthException and will terminate the
> process.
> In a production environment where ZooKeeper has a managed namespace it is not
> possible to give HBase CREATE permission on the parent of its parent znode.
> ZKUtil.createAndFailSilent should therefore be modified to check that the
> znode exists using ZooKeeper.exist prior to attempting to create it.
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