[
https://issues.apache.org/jira/browse/HBASE-4608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13145566#comment-13145566
]
Todd Lipcon commented on HBASE-4608:
------------------------------------
I haven't looked at the patch yet, but it would be great if you could build a
tool to go along with this for testing that compresses/decompresses logs. EG:
bin/hbase org.apache.hadoop.hbase.....HLogTool -compress /path/to/hlog
/path/to/hlog.compressed
bin/hbase org.apache.hadoop.hbase.....HLogTool -uncompress
/path/to/hlog.compressed /path/to/hlog
.. or something like that.
Then real users could see what kind of compression ratio they could expect (and
it serves as a decent test that compress/uncompress yields the original file)
> HLog Compression
> ----------------
>
> Key: HBASE-4608
> URL: https://issues.apache.org/jira/browse/HBASE-4608
> Project: HBase
> Issue Type: New Feature
> Reporter: Li Pi
> Assignee: Li Pi
> Attachments: 4608v1.txt
>
>
> The current bottleneck to HBase write speed is replicating the WAL appends
> across different datanodes. We can speed up this process by compressing the
> HLog. Current plan involves using a dictionary to compress table name, region
> id, cf name, and possibly other bits of repeated data. Also, HLog format may
> be changed in other ways to produce a smaller HLog.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
