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Date: Tue, 13 Dec 2011 13:35:30 +0000 (UTC)
From: "nkeywal (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-4993) Performance regression in
 minicluster creation
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    [ https://issues.apache.org/jira/browse/HBASE-4993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13168374#comment-13168374 ] 

nkeywal commented on HBASE-4993:
--------------------------------

Errors are hadoop-qa related, usual "Too many open files"
client.TestAdmin#testCheckHBaseAvailableClosesConnection: 559 threads (was 293), 1016 file descriptors (was 478).

java.io.FileNotFoundException: /home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/trunk/target/test-data/41fdcdb6-e088-480d-b131-18b5ad56356b/dfscluster_822e8789-caad-4a9f-a090-44b5e9e28fc8/dfs/data/data5/blocksBeingWritten/blk_-3873967043651795350_1007.meta (Too many open files)  
client.TestInstantSchemaChange#testInstantSchemaJanitor: 343 threads (was 120), 874 file descriptors (was 598).


Can be committed imho.
                
> Performance regression in minicluster creation
> ----------------------------------------------
>
>                 Key: HBASE-4993
>                 URL: https://issues.apache.org/jira/browse/HBASE-4993
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.94.0
>         Environment: all
>            Reporter: nkeywal
>            Assignee: nkeywal
>         Attachments: 4993.patch, 4993.v3.patch
>
>
> Side effect of 4610: the mini cluster needs 4,5 seconds to start

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