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 > > > > > >
