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https://issues.apache.org/jira/browse/HBASE-4608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13229027#comment-13229027
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[email protected] commented on HBASE-4608:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/4328/
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Review request for hbase.
Summary
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See issue
This addresses bug hbase-4608.
https://issues.apache.org/jira/browse/hbase-4608
Diffs
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src/main/java/org/apache/hadoop/hbase/HConstants.java 045c6f3
src/main/java/org/apache/hadoop/hbase/regionserver/wal/CompressionContext.java
PRE-CREATION
src/main/java/org/apache/hadoop/hbase/regionserver/wal/Compressor.java
PRE-CREATION
src/main/java/org/apache/hadoop/hbase/regionserver/wal/Dictionary.java
PRE-CREATION
src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLog.java b5049b1
src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLogKey.java 311ea1b
src/main/java/org/apache/hadoop/hbase/regionserver/wal/KeyValueCompression.java
PRE-CREATION
src/main/java/org/apache/hadoop/hbase/regionserver/wal/LRUDictionary.java
PRE-CREATION
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogReader.java
ff63a5f
src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogWriter.java
01ebb5c
src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALEdit.java d8f317c
src/main/java/org/apache/hadoop/hbase/util/Bytes.java de8e40b
src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestCompressor.java
PRE-CREATION
src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestLRUDictionary.java
PRE-CREATION
src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALReplay.java
a11899c
src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALReplayCompressed.java
PRE-CREATION
Diff: https://reviews.apache.org/r/4328/diff
Testing
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Thanks,
Michael
> HLog Compression
> ----------------
>
> Key: HBASE-4608
> URL: https://issues.apache.org/jira/browse/HBASE-4608
> Project: HBase
> Issue Type: New Feature
> Reporter: Li Pi
> Assignee: stack
> Fix For: 0.94.0
>
> Attachments: 4608-v19.txt, 4608-v20.txt, 4608-v22.txt, 4608v1.txt,
> 4608v13.txt, 4608v13.txt, 4608v14.txt, 4608v15.txt, 4608v16.txt, 4608v17.txt,
> 4608v18.txt, 4608v23.txt, 4608v24.txt, 4608v25.txt, 4608v27.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.
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