Which version of HBase?
The below logs that you have attached says about a different table right ' deu_ivytest,,1348826121781.985d6ca9986d7d8cfaf82daf523fcd45.' And the one you are trying to drop is ' ivytest_deu’ Regards Ram > -----Original Message----- > From: 唐 颖 [mailto:ivytang0...@gmail.com] > Sent: Tuesday, October 16, 2012 1:23 PM > To: user@hbase.apache.org > Subject: hbase can't drop a table > > I disable this table ivytest_deu , drop it .Error occurs. > > > ERROR: java.io.IOException: java.io.IOException: HTableDescriptor > missing for ivytest_deu > at > org.apache.hadoop.hbase.master.handler.TableEventHandler.getTableDescri > ptor(TableEventHandler.java:174) > at > org.apache.hadoop.hbase.master.handler.DeleteTableHandler.<init>(Delete > TableHandler.java:44) > at > org.apache.hadoop.hbase.master.HMaster.deleteTable(HMaster.java:1143) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja > va:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso > rImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEn > gine.java:364) > at > org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:13 > 76) > > Here is some help for this command: > Drop the named table. Table must first be disabled. If table has > more than one region, run a major compaction on .META.: > > hbase> major_compact ".META." > > The major_compact ".META." doesn't work. > Then i try to create it ,but HBase says it . > > ERROR: Table already exists: ivytest_deu! > > After checking the region server log , the region server is always > trying to load this region. > > 2012-10-16 00:00:00,308 INFO > org.apache.hadoop.hbase.regionserver.HRegionServer: Received request to > open region: > deu_ivytest,,1348826121781.985d6ca9986d7d8cfaf82daf523fcd45. > 2012-10-16 00:00:00,313 WARN > org.apache.hadoop.hbase.util.FSTableDescriptors: The following folder > is in HBase's root directory and doesn't contain a table descriptor, do > consider deleting it: deu_ivytest > 2012-10-16 00:00:00,358 DEBUG > org.apache.hadoop.hbase.regionserver.HRegion: Opening region: {NAME => > 'deu_ivytest,,1348826121781.985d6ca9986d7d8cfaf82daf523fcd45.', > STARTKEY => '', ENDKEY => '', ENCODED => > 985d6ca9986d7d8cfaf82daf523fcd45,} > 2012-10-16 00:00:00,358 DEBUG > org.apache.hadoop.hbase.regionserver.HRegion: Registered protocol > handler: > region=deu_ivytest,,1348826121781.985d6ca9986d7d8cfaf82daf523fcd45. > protocol=com.xingcloud.adhocprocessor.hbase.coprocessor.DEUColumnAggreg > ationProtocol > 2012-10-16 00:00:00,358 ERROR > org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Failed > open of > region=deu_ivytest,,1348826121781.985d6ca9986d7d8cfaf82daf523fcd45., > starting to roll back the global memstore size. > 2012-10-16 00:00:00,358 INFO > org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Opening > of region {NAME => > 'deu_ivytest,,1348826121781.985d6ca9986d7d8cfaf82daf523fcd45.', > STARTKEY => '', ENDKEY => '', ENCODED => > 985d6ca9986d7d8cfaf82daf523fcd45,} failed, marking as FAILED_OPEN in ZK > > And we have a endpoint in base .After the base tried to load this table > ivy test_deu for 90,000 times ,the endpoint class also has been loaded > for 90,000 times. > The jvm memory has been filled. > The gcutil shows > S0C S1C S0U S1U EC EU OC OU PC > PU YGC YGCT FGC FGCT GCT > 34880.0 34880.0 34648.1 0.0 209472.0 209472.0 2792768.0 2792768.0 > 71072.0 41461.5 129770 3448.191 24598 28469.996 31918.187 > 34880.0 34880.0 34648.1 0.0 209472.0 209472.0 2792768.0 2792768.0 > 71072.0 41461.5 129770 3448.191 24598 28469.996 31918.187 > 34880.0 34880.0 34648.1 0.0 209472.0 209472.0 2792768.0 2792768.0 > 71072.0 41461.5 129770 3448.191 24598 28469.996 31918.187 > 34880.0 34880.0 34648.1 0.0 209472.0 209472.0 2792768.0 2792768.0 > 71072.0 41461.5 129770 3448.191 24598 28469.996 31918.187 > 34880.0 34880.0 34880.0 0.0 209472.0 209472.0 2792768.0 2792768.0 > 71072.0 41461.5 129770 3448.191 24600 28481.974 31930.165 > 34880.0 34880.0 34880.0 0.0 209472.0 209472.0 2792768.0 2792768.0 > 71072.0 41461.5 129770 3448.191 24600 28481.974 31930.165 > > The jmap dump file shows > > 3982039 instances of class org.apache.hadoop.hbase.KeyValue > 191050 instances of class org.apache.hadoop.fs.Path > 187364 instances of class > org.cliffc.high_scale_lib.ConcurrentAutoTable$CAT > 187301 instances of class org.cliffc.high_scale_lib.Counter > 102272 instances of class net.sf.ehcache.concurrent.ReadWriteLockSync > 93652 instances of class org.apache.hadoop.hbase.HRegionInfo > 93650 instances of class > com.google.common.collect.MutableClassToInstanceMap > 93650 instances of class DEUColumnAggregationEndpoint > > DEUColumnAggregationEndpoint is our endpoint class. > > We guess the 90,000 times check this table and load endpoint class > leads this memory leak. > > But how to drop this table? > > > > > > > >
