n how to merge regions, or un register regions
Regards
Rohan
On Friday 26 August 2011 09:42 PM, Buttler, David wrote:
Major_compact is an asynchronous command. It may take some time for space to
be freed. If you are watching your data node logs you should be able to see
blocks being deleted. If you are on the local file system, you should be table
to periodically do a 'du -sh' command on the hbase table directory and see the
used space diminish.
Dave
-----Original Message-----
From: Joel Halbert [mailto:[email protected]]
Sent: Friday, August 26, 2011 2:37 AM
To: [email protected]
Subject: Re: delete does not free hdd space
Hi,
I experience exactly the same thing.
After deleting many rows I do not see a decrease in size of data on
disk.
When I run a major compact manually from the shell it outputs the same
as for Sasha:
0 row(s) in 0.9210 seconds
I am running HBase standalone (without hadoop) on local disk.
On Fri, 2011-08-26 at 10:42 +0300, sasha.maksimenko wrote:
hi!
hm
I've deleted and after that run major_compact
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Version: 0.20.6, r965666, Mon Jul 19 15:48:07 PDT 2010
hbase(main):001:0> major_compact 'task'
0 row(s) in 0.9210 seconds
hbase(main):002:0>
is it could be a problem that I use local file system - not HDFS?
If you run a major_compact from the shell that should purge out deleted
records. By default the major compaction happens on every table every 24 hours.
-chris
On Aug 25, 2011, at 12:17 AM, sasha.maksimenko wrote:
hi!
I need to free hdd space, so I want to delete some unimportant rows
I'm using Thrift call
deleteAllRow(TABLE, ROWID);
to perform deletion of about 10 000 row (when I loaded them it was about 30Gb).
When I perform this operation I checked thru hbase shell that rows are deleted,
but used space of the disk is not changed
I performed compact and major_compact operations (they returned 0 processed
rows) but space is not changed too.
So quesition what should I also do to indicate hbase physically remove this rows
________________________________
The information contained in this communication is intended solely for the use
of the individual or entity to whom it is addressed and others authorized to
receive it. It may contain confidential or legally privileged information. If
you are not the intended recipient you are hereby notified that any disclosure,
copying, distribution or taking any action in reliance on the contents of this
information is strictly prohibited and may be unlawful. If you have received
this communication in error, please notify us immediately by responding to this
email and then delete it from your system. The firm is neither liable for the
proper and complete transmission of the information contained in this
communication nor for any delay in its receipt.
