hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2964) Deadlock when RS tries to RPC to itself inside SplitTransaction
Date Wed, 08 Sep 2010 01:39:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12907052#action_12907052

HBase Review Board commented on HBASE-2964:

Message from: "Todd Lipcon" <todd@cloudera.com>

This is an automatically generated e-mail. To reply, visit:

Seems to make sense. Let me try it on a cluster before I +1 it


    maybe now we can do an:
    assert !this.parent.lock.writeLock().isHeldByCurrentThread() : "Unsafe to hold write lock
while performing RPCs";

- Todd

> Deadlock when RS tries to RPC to itself inside SplitTransaction
> ---------------------------------------------------------------
>                 Key: HBASE-2964
>                 URL: https://issues.apache.org/jira/browse/HBASE-2964
>             Project: HBase
>          Issue Type: Bug
>          Components: ipc, regionserver
>    Affects Versions: 0.90.0
>            Reporter: Todd Lipcon
>            Priority: Blocker
>         Attachments: hbase-2964.txt
> In testing the 0.89.20100830 rc, I ran into a deadlock with the following situation:
> - All of the IPC Handler threads are blocked on the region lock, which is held by CompactSplitThread.
> - CompactSplitThread is in the process of trying to edit META to create the offline parent.
META happens to be on the same server as is executing the split.
> Therefore, the CompactSplitThread is trying to connect back to itself, but all of the
handler threads are blocked, so the IPC never happens. Thus, the entire RS gets deadlocked.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message