HBASE-6564. I will try to take a stab on it this weekend.
./zahoor On Fri, Aug 10, 2012 at 12:47 PM, J Mohamed Zahoor <[email protected]> wrote: > Hi Lars, > > Will file it... > > ./Zahoor > > > On Fri, Aug 10, 2012 at 12:00 AM, lars hofhansl <[email protected]>wrote: > >> Hi zahoor, >> >> could you file a jira with what you found? It looks like a bug. >> Thanks. >> >> >> -- Lars >> >> >> >> ----- Original Message ----- >> From: J Mohamed Zahoor <[email protected]> >> To: [email protected] >> Cc: >> Sent: Thursday, August 9, 2012 2:03 AM >> Subject: Re: Hbase- Hadoop DFS size not decreased even after deleting a >> column family >> >> Hi >> >> I see this atleast in trunk... in TableDeleteFamilyHandler's constructor.. >> >> public TableDeleteFamilyHandler(byte[] tableName, byte [] familyName, >> >> Server server, final MasterServices masterServices) >> throwsIOException { >> >> super(EventType.C_M_ADD_FAMILY, tableName, server, masterServices); >> >> HTableDescriptor htd = getTableDescriptor(); >> >> this.familyName = hasColumnFamily(htd, familyName); >> >> } >> >> >> The event type is added as C_M_ADD_FAMILY.... >> May be this is the problem and it is there in 0.94.1 also !!! >> >> ./zahoor >> >> >> On Wed, Aug 8, 2012 at 5:33 PM, prem yadav <[email protected]> wrote: >> >> > Hi Stack, >> > we have got a lot of these in the logs after we deleted the column >> family. >> > >> > org.apache.hadoop.hbase.regionserver.NoSuchColumnFamilyException: Column >> > family ol does not exist in region <region> >> > at >> > >> org.apache.hadoop.hbase.regionserver.HRegion.checkFamily(HRegion.java:4759) >> > at >> > >> > >> org.apache.hadoop.hbase.regionserver.HRegion.checkFamilies(HRegion.java:2639) >> > at >> > >> > >> org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:2065) >> > at >> > >> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:1962) >> > at >> > >> > >> org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:3428) >> > at sun.reflect.GeneratedMethodAccessor23.invoke(Unknown Source) >> > at >> > >> > >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> > at java.lang.reflect.Method.invoke(Method.java:601) >> > at >> > >> > >> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364) >> > at >> > >> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1386) >> > 2012-08-05 00:11:37,697 DEBUG >> org.apache.hadoop.hbase.regionserver.HRegion: >> > rollbackMemstore rolled back 0 keyvalues from start:0 to end:1 >> > >> > >> > >> > >> > On Tue, Aug 7, 2012 at 10:27 PM, Ted Yu <[email protected]> wrote: >> > >> > > Looking at TableDeleteFamilyHandler, I see: >> > > >> > > protected void handleTableOperation(List<HRegionInfo> hris) throws >> > > IOException { >> > > // Update table descriptor in HDFS >> > > HTableDescriptor htd = >> > > >> this.masterServices.getMasterFileSystem().deleteColumn(tableName, >> > > familyName); >> > > // Update in-memory descriptor cache >> > > this.masterServices.getTableDescriptors().add(htd); >> > > >> > > MasterFileSystem.deleteColumn() calls: >> > > >> > > HTableDescriptor htd = >> > > this.services.getTableDescriptors().get(tableName); >> > > htd.removeFamily(familyName); >> > > >> > > I will dig some more. >> > > >> > > But looks like there is a bug. >> > > >> > > On Tue, Aug 7, 2012 at 9:21 AM, Stack <[email protected]> wrote: >> > > >> > > > On Tue, Aug 7, 2012 at 9:59 AM, prem yadav <[email protected]> >> > wrote: >> > > > > Hi Stack, >> > > > > yes . I can still see the column family. >> > > > > >> > > > > we ran the following command too: >> > > > > >> > > > > fs -dus /hbase/<table name>/<region hash>/<cf that was deleted> >> and >> > it >> > > > > returned a large value which means that the space has not been >> > > reclaimed. >> > > > > The hbase version we are running is 0.94.1. >> > > > > >> > > > > is there a manual way to force reclaim the space? >> > > > > >> > > > >> > > > You could delete the column family from hdfs under each region. >> > > > Anything in the logs around the remove of the column family? Maybe >> we >> > > > just don't do the delete cleanup in hdfs when we drop a cf (I've not >> > > > checked)? >> > > > >> > > > St.Ack >> > > > >> > > >> > >> >> >
