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From "Hudson (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-513) Need to deal with half-dead tservers
Date Fri, 18 Jan 2013 23:58:13 GMT


Hudson commented on ACCUMULO-513:

Integrated in Accumulo-Trunk #649 (See [])
    ACCUMULO-513 Added API and shell command for pinging tablet servers. (Revision 1435416)

     Result = SUCCESS
kturner : 
Files : 
* /accumulo/trunk/core/src/main/java/org/apache/accumulo/core/client/admin/
* /accumulo/trunk/core/src/main/java/org/apache/accumulo/core/client/admin/
* /accumulo/trunk/core/src/main/java/org/apache/accumulo/core/client/mock/
* /accumulo/trunk/core/src/main/java/org/apache/accumulo/core/util/shell/
* /accumulo/trunk/core/src/main/java/org/apache/accumulo/core/util/shell/commands/
* /accumulo/trunk/core/src/main/java/org/apache/accumulo/core/util/shell/commands/

> Need to deal with half-dead tservers
> ------------------------------------
>                 Key: ACCUMULO-513
>                 URL:
>             Project: Accumulo
>          Issue Type: New Feature
>            Reporter: Keith Turner
>            Assignee: Keith Turner
>             Fix For: 1.5.0
> Every once in a while a tablet server will go zombie.  The tablet server is alive and
talking to the master and zookeeper, but not accepting new connections from clients.  To keep
these types of tablet servers from causing problems a process could try to scan a tablet on
each tablet server periodically.  If it can not scan a tablet within a certain number of tries,
it could delete the tservers lock in zookeeper.  The monitor process could do this.  

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