[
https://issues.apache.org/jira/browse/HBASE-4608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192024#comment-13192024
]
[email protected] commented on HBASE-4608:
------------------------------------------------------
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressedKeyValue.java,
line 34
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68704#file68704line34>
bq. >
bq. > '/less' should be removed.
fixed.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressedKeyValue.java,
line 42
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68704#file68704line42>
bq. >
bq. > javadoc needs update.
fixed.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressedKeyValue.java,
line 43
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68704#file68704line43>
bq. >
bq. > Either remove the word 'a' or change it into 'an'
fixed.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressedKeyValue.java,
line 78
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68704#file68704line78>
bq. >
bq. > Please change ourKV to keyval or something similar.
fixed.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressedKeyValue.java,
line 82
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68704#file68704line82>
bq. >
bq. > Update javadoc to match the context parameter.
fixed.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressedKeyValue.java,
line 94
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68704#file68704line94>
bq. >
bq. > I think adding 'the effect of compression would be good' at the end
would make the sentence more easily understandable.
fixed
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogReader.java,
line 60
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68710#file68710line60>
bq. >
bq. > Remove whitespace.
fixed.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogReader.java,
line 154
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68710#file68710line154>
bq. >
bq. > This javadoc is more suitable for the init() method.
fixed.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogReader.java,
line 186
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68710#file68710line186>
bq. >
bq. > Please include e in new IOE.
fixed. I assume you mean store it as the cause.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogWriter.java,
line 93
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68711#file68711line93>
bq. >
bq. > Please include e in the new IOE.
fixed above.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALDictionary.java, line
2
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68712#file68712line2>
bq. >
bq. > Please remove year.
fixed above.
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALDictionary.java, line
35
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68712#file68712line35>
bq. >
bq. > Please put this line at the end of line 34.
fixed
bq. On 2012-01-20 22:56:07, Ted Yu wrote:
bq. >
src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALDictionary.java, line
53
bq. > <https://reviews.apache.org/r/2740/diff/12/?file=68712#file68712line53>
bq. >
bq. > 'ad' should be 'add'
fixed.
- Li
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/2740/#review4508
-----------------------------------------------------------
On 2012-01-13 01:37:35, Li Pi wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/2740/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2012-01-13 01:37:35)
bq.
bq.
bq. Review request for hbase, Eli Collins and Todd Lipcon.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. HLog compression. Has unit tests and a command line tool for
compressing/decompressing.
bq.
bq.
bq. This addresses bug HBase-4608.
bq. https://issues.apache.org/jira/browse/HBase-4608
bq.
bq.
bq. Diffs
bq. -----
bq.
bq.
src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALReplay.java
59910bf
bq.
src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALReplayCompressed.java
PRE-CREATION
bq.
src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestLRUDictionary.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALEdit.java
e1117ef
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALDictionary.java
PRE-CREATION
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogWriter.java
cbef70f
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogReader.java
d9cd6de
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/wal/LRUDictionary.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLogKey.java
f067221
bq. src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLog.java 24407af
bq. src/main/java/org/apache/hadoop/hbase/regionserver/wal/Compressor.java
PRE-CREATION
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressionContext.java
PRE-CREATION
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressedKeyValue.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/HConstants.java 5120a3c
bq.
bq. Diff: https://reviews.apache.org/r/2740/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq.
bq. Thanks,
bq.
bq. Li
bq.
bq.
> 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, 4608v5.txt, 4608v6.txt, 4608v7.txt,
> 4608v8fixed.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
