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From "liaowenrui (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3203) Currently,The Checkpointer is controled by time.in this way,it must be checkponit in that it is only one transaction in checkpoint period.I think it need add file size to control checkpoint
Date Thu, 05 Apr 2012 06:21:50 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247056#comment-13247056
] 

liaowenrui commented on HDFS-3203:
----------------------------------

only controled by time,the edits file is very small,when the system is idlesse.in this case,it
produce a good many of edits file.


-rw-r--r-- 1 root root   30 Apr  4 20:54 edits_0000000000000000001-0000000000000000002
-rw-r--r-- 1 root root 1.7M Apr  4 21:54 edits_0000000000000000003-0000000000000017336
-rw-r--r-- 1 root root 1.1M Apr  4 22:54 edits_0000000000000017337-0000000000000026001
-rw-r--r-- 1 root root   30 Apr  4 23:54 edits_0000000000000026002-0000000000000026003
-rw-r--r-- 1 root root  232 Apr  5 00:54 edits_0000000000000026004-0000000000000026007
-rw-r--r-- 1 root root  160 Apr  5 01:54 edits_0000000000000026008-0000000000000026010
-rw-r--r-- 1 root root   30 Apr  5 02:54 edits_0000000000000026011-0000000000000026012
-rw-r--r-- 1 root root   30 Apr  5 03:54 edits_0000000000000026013-0000000000000026014
-rw-r--r-- 1 root root   30 Apr  5 04:54 edits_0000000000000026015-0000000000000026016
-rw-r--r-- 1 root root   30 Apr  5 05:54 edits_0000000000000026017-0000000000000026018
-rw-r--r-- 1 root root   30 Apr  5 06:54 edits_0000000000000026019-0000000000000026020
-rw-r--r-- 1 root root   30 Apr  5 07:54 edits_0000000000000026021-0000000000000026022
-rw-r--r-- 1 root root   30 Apr  5 08:54 edits_0000000000000026023-0000000000000026024
-rw-r--r-- 1 root root 1.7M Apr  5 09:54 edits_0000000000000026025-0000000000000043334
-rw-r--r-- 1 root root 2.2K Apr  5 10:54 edits_0000000000000043335-0000000000000043358

                
> Currently,The Checkpointer is controled by time.in this way,it must be checkponit in
that it is only one transaction in checkpoint period.I think it need add file size to control
 checkpoint
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3203
>                 URL: https://issues.apache.org/jira/browse/HDFS-3203
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.24.0, 2.0.0
>            Reporter: liaowenrui
>


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