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Hadoop QA commented on HBASE-14479: ----------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12762069/HBASE-14479.patch against master branch at commit 5b7894f92ba3e9ff700da1e9194ebb4774d8b71e. ATTACHMENT ID: 12762069 {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 hadoop versions{color}. The patch compiles with all supported hadoop versions (2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.0 2.7.0 2.7.1) {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 protoc{color}. The applied patch does not increase the total number of protoc 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 post-site goal succeeds with this patch. {color:red}-1 core tests{color}. The patch failed these unit tests: org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildOverlap org.apache.hadoop.hbase.master.TestRollingRestart org.apache.hadoop.hbase.master.TestTableLockManager org.apache.hadoop.hbase.master.handler.TestEnableTableHandler org.apache.hadoop.hbase.master.TestRegionPlacement org.apache.hadoop.hbase.master.TestRestartCluster org.apache.hadoop.hbase.master.TestMasterFailover org.apache.hadoop.hbase.regionserver.TestPerColumnFamilyFlush org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildBase org.apache.hadoop.hbase.master.procedure.TestServerCrashProcedure org.apache.hadoop.hbase.master.procedure.TestMasterFailoverWithProcedures org.apache.hadoop.hbase.TestRegionRebalancing org.apache.hadoop.hbase.master.TestMasterRestartAfterDisablingTable org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildHole org.apache.hadoop.hbase.regionserver.TestHRegionOnCluster org.apache.hadoop.hbase.master.TestDistributedLogSplitting org.apache.hadoop.hbase.TestFullLogReconstruction {color:red}-1 core zombie tests{color}. There are 23 zombie test(s): at org.apache.hadoop.hbase.util.TestHBaseFsck.testQuarantineCorruptHFile(TestHBaseFsck.java:2231) at org.apache.hadoop.hbase.util.TestHBaseFsck.testQuarantineMissingHFile(TestHBaseFsck.java:2373) at org.apache.hadoop.hbase.util.TestHBaseFsck.testFixHdfsHolesNotWorkingWithNoHdfsChecking(TestHBaseFsck.java:2152) at org.apache.hadoop.hbase.util.TestHBaseFsck.testCoveredStartKey(TestHBaseFsck.java:1145) at org.apache.hadoop.hbase.coprocessor.TestRegionObserverInterface.testIncrementHook(TestRegionObserverInterface.java:220) at org.apache.hadoop.hbase.coprocessor.TestRegionObserverInterface.testRegionObserver(TestRegionObserverInterface.java:124) at org.apache.hadoop.hbase.coprocessor.TestRegionObserverInterface.testRowMutation(TestRegionObserverInterface.java:183) at org.apache.hadoop.hbase.coprocessor.TestRegionObserverInterface.testCheckAndPutHooks(TestRegionObserverInterface.java:248) at org.apache.hadoop.hbase.TestIOFencing.testFencingAroundCompactionAfterWALSync(TestIOFencing.java:238) at org.apache.hadoop.hbase.client.TestFromClientSide.testJiraTest861(TestFromClientSide.java:2275) at org.apache.hadoop.hbase.client.TestReplicasClient.testGetNoResultNotStaleSleepRegionWithReplica(TestReplicasClient.java:370) at org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster.testSSHCleanupDaugtherRegionsOfAbortedSplit(TestSplitTransactionOnCluster.java:1003) at org.apache.hadoop.hbase.client.TestClientTimeouts.testAdminTimeout(TestClientTimeouts.java:108) at org.apache.hadoop.hbase.util.TestHBaseFsckEncryption.testFsckWithEncryption(TestHBaseFsckEncryption.java:132) at org.apache.hadoop.hbase.coprocessor.TestOpenTableInCoprocessor.testCoprocessorCanCreateConnectionToRemoteTableWithCustomPool(TestOpenTableInCoprocessor.java:145) at org.apache.hadoop.hbase.client.TestMetaWithReplicas.testShutdownHandling(TestMetaWithReplicas.java:141) at org.apache.hadoop.hbase.regionserver.TestSplitWalDataLoss.test(TestSplitWalDataLoss.java:141) at org.apache.hadoop.hbase.client.TestFromClientSide.testKeyOnlyFilter(TestFromClientSide.java:700) at org.apache.hadoop.hbase.util.TestRegionSplitter.testCreatePresplitTableUniform(TestRegionSplitter.java:129) at org.apache.hadoop.hbase.client.TestHTableMultiplexerFlushCache.testOnRegionChange(TestHTableMultiplexerFlushCache.java:115) at org.apache.hadoop.hbase.client.TestFastFail.testFastFail(TestFastFail.java:237) at org.apache.hadoop.hbase.client.replication.TestReplicationAdminWithClusters.testEnableReplicationWhenSlaveClusterDoesntHaveTable(TestReplicationAdminWithClusters.java:65) at org.apache.hadoop.hbase.client.TestHCM.testRegionCaching(TestHCM.java:574) at org.apache.hadoop.hbase.client.TestHCM.testConnectionIdle(TestHCM.java:417) at org.apache.hadoop.hbase.client.TestHCM.testConnectionClose(TestHCM.java:331) at org.apache.hadoop.hbase.client.TestHCM.testConnectionCloseAllowsInterrupt(TestHCM.java:280) at org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildBase.testMetaRebuild(TestOfflineMetaRebuildBase.java:55) at org.apache.hadoop.hbase.regionserver.TestEndToEndSplitTransaction.testMasterOpsWhileSplitting(TestEndToEndSplitTransaction.java:98) at org.apache.hadoop.hbase.regionserver.TestRegionServerMetrics.testMutationsWithoutWal(TestRegionServerMetrics.java:199) Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/15709//testReport/ Release Findbugs (version 2.0.3) warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/15709//artifact/patchprocess/newFindbugsWarnings.html Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/15709//artifact/patchprocess/checkstyle-aggregate.html Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/15709//console This message is automatically generated. > Apply the Leader/Followers pattern to RpcServer's Reader > -------------------------------------------------------- > > Key: HBASE-14479 > URL: https://issues.apache.org/jira/browse/HBASE-14479 > Project: HBase > Issue Type: Improvement > Components: IPC/RPC, Performance > Reporter: Hiroshi Ikeda > Assignee: Hiroshi Ikeda > Priority: Minor > Attachments: HBASE-14479.patch > > > {{RpcServer}} uses multiple selectors to read data for load distribution, but > the distribution is just done by round-robin. It is uncertain, especially for > long run, whether load is equally divided and resources are used without > being wasted. > Moreover, multiple selectors may cause excessive context switches which give > priority to low latency (while we just add the requests to queues), and it is > possible to reduce throughput of the whole server. -- This message was sent by Atlassian JIRA (v6.3.4#6332)