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https://issues.apache.org/jira/browse/HDFS-15880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xie Lei resolved HDFS-15880.
----------------------------
Resolution: Later
> Reduce redundant end logsegment rpc
> ------------------------------------
>
> Key: HDFS-15880
> URL: https://issues.apache.org/jira/browse/HDFS-15880
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Reporter: Xie Lei
> Assignee: Xie Lei
> Priority: Minor
>
> The SNN always send end logsegment rpc in cycle（dfs.ha.log-roll.period=120s）.
> If no edit request occurs during this period, ANN will still send the RPC
> request to the journal node which is redundant.
>
> Editlogs only contains two operations :
> LogSegmentOp [opCode=OP_START_LOG_SEGMENT, txid=-12345]
> LogSegmentOp [opCode=OP_END_LOG_SEGMENT, txid=-12345]
> {code:java}
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:35
> edits_0000000000000000001-0000000000000000002
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:37
> edits_0000000000000000003-0000000000000000004
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:39
> edits_0000000000000000005-0000000000000000006
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:41
> edits_0000000000000000007-0000000000000000008
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:43
> edits_0000000000000000009-0000000000000000010
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:45
> edits_0000000000000000011-0000000000000000012
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:48
> edits_0000000000000000013-0000000000000000014
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:50
> edits_0000000000000000015-0000000000000000016
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:52
> edits_0000000000000000017-0000000000000000018
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:54
> edits_0000000000000000019-0000000000000000020
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:56
> edits_0000000000000000021-0000000000000000022
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 00:58
> edits_0000000000000000023-0000000000000000024
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 01:00
> edits_0000000000000000025-0000000000000000026
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 01:02
> edits_0000000000000000027-0000000000000000028
> -rw-r----- 1 dcadmin dcadmin 42 Mar 7 01:04
> edits_0000000000000000029-0000000000000000030
> {code}
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