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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-6597) Block Encoding Size Estimation
Date Sun, 07 Oct 2012 09:40:03 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phabricator updated HBASE-6597:
-------------------------------

    Attachment: D5895.2.patch

mbautin updated the revision "[jira] [HBASE-6597] [89-fb] Incremental data block encoding".
Reviewers: Kannan, Karthik, Liyin, aaiyer, avf, JIRA

  Removing code duplication on the encoding codepath. Addressing some of Ted's comments (I
will double-check that I have not missed any of them later).

REVISION DETAIL
  https://reviews.facebook.net/D5895

AFFECTED FILES
  src/main/java/org/apache/hadoop/hbase/KeyValue.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/CompressionState.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/CopyKeyDataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoding.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/DiffKeyDeltaEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/EncodedDataBlock.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/encoding/PrefixKeyDeltaEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoderImpl.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV2.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java
  src/main/java/org/apache/hadoop/hbase/io/hfile/NoOpDataBlockEncoder.java
  src/main/java/org/apache/hadoop/hbase/util/ByteBufferUtils.java
  src/test/java/org/apache/hadoop/hbase/io/encoding/TestDataBlockEncoders.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheOnWrite.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFile.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlock.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockIndex.java
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestIncrementalEncoding.java
  src/test/java/org/apache/hadoop/hbase/util/TestByteBufferUtils.java

To: Kannan, Karthik, Liyin, aaiyer, avf, JIRA, mbautin
Cc: tedyu

                
> Block Encoding Size Estimation
> ------------------------------
>
>                 Key: HBASE-6597
>                 URL: https://issues.apache.org/jira/browse/HBASE-6597
>             Project: HBase
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 0.89-fb
>            Reporter: Brian Nixon
>            Assignee: Mikhail Bautin
>            Priority: Minor
>         Attachments: D5895.1.patch, D5895.2.patch
>
>
> Blocks boundaries as created by current writers are determined by the size of the unencoded
data. However, blocks in memory are kept encoded. By using an estimate for the encoded size
of the block, we can get greater consistency in size.

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