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From "Alessandro Presta (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-326) Writing input splits to ZooKeeper in parallel
Date Wed, 19 Sep 2012 16:47:08 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13458835#comment-13458835
] 

Alessandro Presta commented on GIRAPH-326:
------------------------------------------

Eli: our colleague had over 3000 list entries. Each entry is 10KB, and apparently Zookeeper
can write around 20 of them per second. Hence he was getting a crash with "Forced a shutdown
hook kill of the ZooKeeper process" on the master.
                
> Writing input splits to ZooKeeper in parallel
> ---------------------------------------------
>
>                 Key: GIRAPH-326
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-326
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Maja Kabiljo
>         Attachments: GIRAPH-326.patch
>
>
> (Posting issue and the patch from a colleague)
> Writing input splits to zookeeper can take a lot of time. From his experiments: serial
2m45s, with 16 cores 15s.

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