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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2012/05/01 07:53:47 UTC
[jira] [Commented] (HBASE-5712) Parallelize load of .regioninfo
files in diagnostic/repair portion of hbck.
[ https://issues.apache.org/jira/browse/HBASE-5712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13265667#comment-13265667 ]
Hudson commented on HBASE-5712:
-------------------------------
Integrated in HBase-TRUNK-security #188 (See [https://builds.apache.org/job/HBase-TRUNK-security/188/])
HBASE-5712 Parallelize load of .regioninfo files in diagnostic/repair portion of hbck (Revision 1332072)
Result = FAILURE
jmhsieh :
Files :
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/util/HBaseFsck.java
* /hbase/trunk/src/test/java/org/apache/hadoop/hbase/util/TestHBaseFsck.java
> Parallelize load of .regioninfo files in diagnostic/repair portion of hbck.
> ---------------------------------------------------------------------------
>
> Key: HBASE-5712
> URL: https://issues.apache.org/jira/browse/HBASE-5712
> Project: HBase
> Issue Type: Improvement
> Components: hbck
> Affects Versions: 0.90.7, 0.92.2, 0.94.0, 0.96.0
> Reporter: Jonathan Hsieh
> Assignee: Jonathan Hsieh
> Fix For: 0.90.7, 0.92.2, 0.94.0, 0.96.0
>
> Attachments: hbase-5712-90-v2.patch, hbase-5712-90.patch, hbase-5712-v2.patch, hbase-5712.patch
>
>
> On heavily loaded hdfs's some dfs nodes may not respond quickly and backs off for 60s before attempting to read data from another datanode. Portions of the information gathered from hdfs (.regioninfo files) are loaded serially. With HBase with clusters with 100's, or 1000's, or 10000's regions encountering these 60s delay blocks progress and can be very painful.
> There is already some parallelization of portions of the hdfs information load operations and the goal here is move the reading of .regioninfos into the parallelized sections..
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