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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12213) HFileBlock backed by Array of ByteBuffers
Date Mon, 27 Jul 2015 16:26:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14642948#comment-14642948
] 

Hudson commented on HBASE-12213:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #6679 (See [https://builds.apache.org/job/HBase-TRUNK/6679/])
HBASE-14063 Use BufferBackedCell in read path after HBASE-12213 and (ramkrishna: rev 3f80e0ea4f101298d9dbd574ffcf388afb621d55)
* hbase-common/src/main/java/org/apache/hadoop/hbase/util/ByteBufferUtils.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/ByteBufferedKeyOnlyKeyValue.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValue.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/NoTagsKeyValue.java
* hbase-common/src/test/java/org/apache/hadoop/hbase/TestOffheapKeyValue.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/SizeCachedNoTagsKeyValue.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/OffheapKeyValue.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/OffheapKeyOnlyKeyValue.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/util/BloomFilterUtil.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValueUtil.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestByteBufferIOEngine.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/ByteBufferIOEngine.java


> HFileBlock backed by Array of ByteBuffers
> -----------------------------------------
>
>                 Key: HBASE-12213
>                 URL: https://issues.apache.org/jira/browse/HBASE-12213
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>            Reporter: Anoop Sam John
>            Assignee: ramkrishna.s.vasudevan
>         Attachments: HBASE-12213_1.patch, HBASE-12213_10_withBBI.patch, HBASE-12213_11_withBBI.patch,
HBASE-12213_12_withBBI.patch, HBASE-12213_12_withBBI.patch, HBASE-12213_13_withBBI.patch,
HBASE-12213_14_withBBI.patch, HBASE-12213_2.patch, HBASE-12213_4.patch, HBASE-12213_8_withBBI.patch,
HBASE-12213_9_withBBI.patch, HBASE-12213_final.patch, HBASE-12213_jmh.zip
>
>
> In L2 cache (offheap) an HFile block might have been cached into multiple chunks of buffers.
If HFileBlock need single BB, we will end up in recreation of bigger BB and copying. Instead
we can make HFileBlock to serve data from an array of BBs.



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