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Appy commented on HBASE-14252: ------------------------------ Backport to 1.2 please? > RegionServers fail to start when setting > hbase.ipc.server.callqueue.scan.ratio to 0 > ----------------------------------------------------------------------------------- > > Key: HBASE-14252 > URL: https://issues.apache.org/jira/browse/HBASE-14252 > Project: HBase > Issue Type: Bug > Components: regionserver > Environment: hbase-0.98.6-cdh5.3.1 > Reporter: Toshihiro Suzuki > Assignee: Yubao Liu > Fix For: 2.0.0, 1.3.0 > > Attachments: 14252.v2.patch, 14252.v3.patch > > > I set the following configuration in hbase-site.xml. > {code} > <property> > <name>hbase.ipc.server.callqueue.read.ratio</name> > <value>0.5</value> > </property> > <property> > <name>hbase.ipc.server.callqueue.scan.ratio</name> > <value>0</value> > <property> > {code} > Then, the RegionServer failed to start and I saw the following log: > {code} > 2015-08-19 14:30:19,561 ERROR > org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine: Region server > exiting > java.lang.RuntimeException: Failed construction of Regionserver: class > org.apache.hadoop.hbase.regionserver.HRegionServer > at > org.apache.hadoop.hbase.regionserver.HRegionServer.constructRegionServer(HRegionServer.java:2457) > at > org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:61) > at > org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:85) > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) > at > org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126) > at > org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:2472) > Caused by: java.lang.reflect.InvocationTargetException > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method) > at > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:526) > at > org.apache.hadoop.hbase.regionserver.HRegionServer.constructRegionServer(HRegionServer.java:2455) > ... 5 more > Caused by: java.lang.IllegalArgumentException: Queue size is <= 0, must be at > least 1 > at > com.google.common.base.Preconditions.checkArgument(Preconditions.java:92) > at > org.apache.hadoop.hbase.ipc.RpcExecutor.getBalancer(RpcExecutor.java:139) > at > org.apache.hadoop.hbase.ipc.RWQueueRpcExecutor.<init>(RWQueueRpcExecutor.java:121) > at > org.apache.hadoop.hbase.ipc.RWQueueRpcExecutor.<init>(RWQueueRpcExecutor.java:83) > at > org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.<init>(SimpleRpcScheduler.java:129) > at > org.apache.hadoop.hbase.regionserver.SimpleRpcSchedulerFactory.create(SimpleRpcSchedulerFactory.java:36) > at > org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:610) > ... 10 more > {code} > The doc of "hbase.ipc.server.callqueue.scan.ratio" says "A value of 0 or 1 > indicate to use the same set of queues for gets and scans.". > I think that there is a bug in validation. -- This message was sent by Atlassian JIRA (v6.4.14#64029)