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Hadoop QA commented on HBASE-12636: ----------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12685233/HBASE-12635-v2.diff against master branch at commit 65830b096b6f540b7e49ef590dac1ebe2491c126. ATTACHMENT ID: 12685233 {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:red}-1 tests included{color}. The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 javadoc{color}. The javadoc tool did not generate any warning messages. {color:green}+1 checkstyle{color}. The applied patch does not increase the total number of checkstyle errors {color:green}+1 findbugs{color}. The patch does not introduce any new Findbugs (version 2.0.3) warnings. {color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings. {color:green}+1 lineLengths{color}. The patch does not introduce lines longer than 100 {color:green}+1 site{color}. The mvn site goal succeeds with this patch. {color:green}+1 core tests{color}. The patch passed unit tests in . Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//testReport/ Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-annotations.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-common.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-protocol.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-client.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-examples.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-thrift.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-rest.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/newPatchFindbugsWarningshbase-server.html Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//artifact/patchprocess/checkstyle-aggregate.html Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/12072//console This message is automatically generated. > Avoid too many write operations on zookeeper in replication > ----------------------------------------------------------- > > Key: HBASE-12636 > URL: https://issues.apache.org/jira/browse/HBASE-12636 > Project: HBase > Issue Type: Improvement > Affects Versions: 0.94.11 > Reporter: Liu Shaohui > Assignee: Liu Shaohui > Labels: replication > Fix For: 1.0.0 > > Attachments: HBASE-12635-v2.diff, HBASE-12636-v1.diff > > > In our production cluster, we found there are about over 1k write operations > per second on zookeeper from hbase replication. The reason is that the > replication source will write the log position to zookeeper for every edit > shipping. If the current replicating WAL is just the WAL that regionserver is > writing to, each skipping will be very small but the frequency is very high, > which causes many write operations on zookeeper. > A simple solution is that writing log position to zookeeper when position > diff or skipped edit number is larger than a threshold, not every edit > shipping. > Suggestions are welcomed, thx~ -- This message was sent by Atlassian JIRA (v6.3.4#6332)