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From "Michael Kjellman (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-5146) repair -pr hangs
Date Wed, 20 Feb 2013 05:17:13 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581955#comment-13581955
] 

Michael Kjellman edited comment on CASSANDRA-5146 at 2/20/13 5:15 AM:
----------------------------------------------------------------------

positive it hangs, and yes i agree we need more to debug here.

i took a stack trace on the nodes that started the repair and there were no deadlocks.

In one case however, the repair triggered another node to stream for the repair session so
maybe that's a place to look.

Nothing interesting/abnormal logged with TRACE logging on .streaming or cassandra.db and a
few other classes I tried
                
      was (Author: mkjellman):
    positive it hangs, and yes i agree we need more to debug here.

i took a stack trace on the nodes that started the repair and there were no deadlocks.

In one case however, the repair triggered another node to stream for the repair session so
maybe that's a place to look.

Nothing logged with TRACE logging on .streaming or cassandra.db and a few other classes I
tried
                  
> repair -pr hangs
> ----------------
>
>                 Key: CASSANDRA-5146
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5146
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.2.0
>         Environment: Ubuntu 12.04
>            Reporter: Michael Kjellman
>            Assignee: Sylvain Lebresne
>             Fix For: 1.2.2
>
>
> while running a repair -pr the repair seems to hang after getting a merkle tree
> {code}
>  INFO [AntiEntropySessions:9] 2013-01-10 18:23:01,652 AntiEntropyService.java (line 652)
[repair #d29fd100-5b95-11e2-b9c7-dd50a26832ff] new session: will sync /10.8.25.101, /10.8.30.14
on range (28356863910078205288614550619314017620,42535295865117307932921825928971026436] for
evidence.[fingerprints, messages]
>  INFO [AntiEntropySessions:9] 2013-01-10 18:23:01,653 AntiEntropyService.java (line 857)
[repair #d29fd100-5b95-11e2-b9c7-dd50a26832ff] requesting merkle trees for fingerprints (to
[/10.8.30.14, /10.8.25.101])
>  INFO [ValidationExecutor:7] 2013-01-10 18:23:01,654 ColumnFamilyStore.java (line 647)
Enqueuing flush of Memtable-fingerprints@500862962(12960712/12960712 serialized/live bytes,
469 ops)
>  INFO [FlushWriter:25] 2013-01-10 18:23:01,655 Memtable.java (line 424) Writing Memtable-fingerprints@500862962(12960712/12960712
serialized/live bytes, 469 ops)
>  INFO [FlushWriter:25] 2013-01-10 18:23:02,058 Memtable.java (line 458) Completed flushing
/data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-192-Data.db (11413718 bytes)
for commitlog position ReplayPosition(segmentId=1357767160463, position=8921654)
>  INFO [AntiEntropyStage:1] 2013-01-10 18:25:52,735 AntiEntropyService.java (line 214)
[repair #d29fd100-5b95-11e2-b9c7-dd50a26832ff] Received merkle tree for fingerprints from
/10.8.25.101
> {code}

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