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From "Phabricator (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5521) Move compression/decompression to an encoder specific encoding context
Date Sat, 17 Mar 2012 08:13:51 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phabricator updated HBASE-5521:
-------------------------------

    Attachment: HBASE-5521.D2097.9.patch

heyongqiang updated the revision "HBASE-5521 [jira] Move compression/decompression to an encoder
specific encoding context".
Reviewers: JIRA, dhruba, tedyu, sc, mbautin

  address ted's comments:
  fixed a typo, rename a function name etc

REVISION DETAIL
  https://reviews.facebook.net/D2097

AFFECTED FILES
  src/test/java/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.java
  src/test/java/org/apache/hadoop/hbase/io/encoding/TestDataBlockEncoders.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlock.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileDataBlockEncoder.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockCompatibility.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/EncodedDataBlock.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDefaultDecodingContext.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockEncodingContext.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/PrefixKeyDeltaEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDefaultEncodingContext.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/CopyKeyDataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoderImpl.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/Compression.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/NoOpDataBlockEncoder.java

                
> Move compression/decompression to an encoder specific encoding context
> ----------------------------------------------------------------------
>
>                 Key: HBASE-5521
>                 URL: https://issues.apache.org/jira/browse/HBASE-5521
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
>         Attachments: HBASE-5521.1.patch, HBASE-5521.D2097.1.patch, HBASE-5521.D2097.2.patch,
HBASE-5521.D2097.3.patch, HBASE-5521.D2097.4.patch, HBASE-5521.D2097.5.patch, HBASE-5521.D2097.6.patch,
HBASE-5521.D2097.7.patch, HBASE-5521.D2097.8.patch, HBASE-5521.D2097.9.patch
>
>
> As part of working on HBASE-5313, we want to add a new columnar encoder/decoder. It makes
sense to move compression to be part of encoder/decoder:
> 1) a scanner for a columnar encoded block can do lazy decompression to a specific part
of a key value object
> 2) avoid an extra bytes copy from encoder to hblock-writer. 
> If there is no encoder specified for a writer, the HBlock.Writer will use a default compression-context
to do something very similar to today's code.

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