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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10835) DBE encode path improvements
Date Thu, 22 May 2014 19:35:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14006371#comment-14006371
] 

Hudson commented on HBASE-10835:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #5137 (See [https://builds.apache.org/job/HBase-TRUNK/5137/])
HBASE-10835 DBE encode path improvements.(Anoop) (anoopsamjohn: rev 53513dcb452e104bbfd71819054bf4d68808f731)
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/EncodedDataBlock.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockEncodingContext.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/EncodingState.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockCompatibility.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/CopyKeyDataBlockEncoder.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV3.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDefaultEncodingContext.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoder.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java
* hbase-prefix-tree/src/main/java/org/apache/hadoop/hbase/codec/prefixtree/encode/EncoderFactory.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/PrefixKeyDeltaEncoder.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/encoding/TestDataBlockEncoders.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/encoding/TestSeekToBlockWithEncoders.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoderImpl.java
* hbase-prefix-tree/src/main/java/org/apache/hadoop/hbase/codec/prefixtree/PrefixTreeCodec.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileDataBlockEncoder.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/NoOpDataBlockEncoder.java
* hbase-prefix-tree/src/main/java/org/apache/hadoop/hbase/codec/prefixtree/encode/EncoderPoolImpl.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/encoding/TestPrefixTreeEncoding.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlock.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java


> DBE encode path improvements
> ----------------------------
>
>                 Key: HBASE-10835
>                 URL: https://issues.apache.org/jira/browse/HBASE-10835
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 0.99.0
>
>         Attachments: HBASE-10835.patch, HBASE-10835_V2.patch, HBASE-10835_V3.patch, HBASE-10835_V4.patch,
HBASE-10835_V5.patch
>
>
> Here 1st we write KVs (Cells) into a buffer and then passed to DBE encoder. Encoder again
reads kvs one by one from the buffer and encodes and creates a new buffer.
> There is no need to have this model now. Previously we had option of no encode in disk
and encode only in cache. At that time the read buffer from a HFile block was passed to this
and encodes.
> So encode cell by cell can be done now. Making this change will need us to have a NoOp
DBE impl which just do the write of a cell as it is with out any encoding.



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