Xie Lei created HDFS-15880:
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Summary: 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
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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