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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1077) Deadlock possible with log recovery.
Date Wed, 27 Feb 2013 22:25:13 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13588853#comment-13588853
] 

Hudson commented on ACCUMULO-1077:
----------------------------------

Integrated in Accumulo-1.5-Hadoop-2.0 #2 (See [https://builds.apache.org/job/Accumulo-1.5-Hadoop-2.0/2/])
    ACCUMULO-1077 fixed deadlock w/ walog recovery and made walog recovery retry w/ backoff....
failed log recoveries were not retrying (Revision 1450993)

     Result = FAILURE
kturner : 
Files : 
* /accumulo/branches/1.5/core/src/main/java/org/apache/accumulo/core/conf/Property.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/Master.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/recovery/HadoopLogCloser.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/recovery/LogCloser.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/recovery/MapRLogCloser.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/recovery/MapRRecoverLease.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/recovery/RecoverLease.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/recovery/RecoveryManager.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/master/recovery/SubmitFileForRecovery.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/tabletserver/log/LogSorter.java
* /accumulo/branches/1.5/server/src/main/java/org/apache/accumulo/server/zookeeper/DistributedWorkQueue.java

                
> Deadlock possible with log recovery.
> ------------------------------------
>
>                 Key: ACCUMULO-1077
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1077
>             Project: Accumulo
>          Issue Type: Bug
>            Reporter: Keith Turner
>            Assignee: Keith Turner
>            Priority: Blocker
>             Fix For: 1.5.0
>
>
> The master enqueues a FATE operation to start log recovery.  If all FATE threads are
busy trying to read the metadata table and the metadata table needs to be recovered then we
are stuck.  I think this bug may be new in 1.5, but I am not sure.  Need to check if it exists
in 1.4.

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