lamber-ken opened a new pull request #2750: URL: https://github.com/apache/hadoop/pull/2750
## ISSUE https://issues.apache.org/jira/browse/HDFS-15880 ## OUTLINE 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. - The `FSEditLog#endCurrentLogSegment` is synchronized will affetc other rpc requests. Editlogs only contains two operations : ``` LogSegmentOp [opCode=OP_START_LOG_SEGMENT, txid=-12345] LogSegmentOp [opCode=OP_END_LOG_SEGMENT, txid=-12345] ``` ``` [dcadmin@dw-work-006 ~]$ ll /work/data/hadoop/hdfs/journalnode/nn-work/current/ total 1100 -rw-r----- 1 dcadmin dcadmin 8 Mar 7 01:02 committed-txid -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 ``` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
