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https://issues.apache.org/jira/browse/BOOKKEEPER-429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13877174#comment-13877174
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Hudson commented on BOOKKEEPER-429:
-----------------------------------
FAILURE: Integrated in bookkeeper-trunk #516 (See
[https://builds.apache.org/job/bookkeeper-trunk/516/])
BOOKKEEPER-429: Provide separate read and write threads in the bookkeeper
server (Aniruddha via sijie) (sijie: rev 1559917)
* /zookeeper/bookkeeper/trunk/CHANGES.txt
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Journal.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/conf/ServerConfiguration.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/processor
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/processor/RequestProcessor.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/BookieNettyServer.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/BookieRequestHandler.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/BookieRequestProcessor.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/BookieServer.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/test/java/org/apache/bookkeeper/client/SlowBookieTest.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/test/java/org/apache/bookkeeper/test/BookieReadWriteTest.java
*
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/test/java/org/apache/bookkeeper/test/MultipleThreadReadTest.java
> Provide separate read and write threads in the bookkeeper server
> ----------------------------------------------------------------
>
> Key: BOOKKEEPER-429
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-429
> Project: Bookkeeper
> Issue Type: Improvement
> Components: bookkeeper-server
> Affects Versions: 4.2.0
> Reporter: Aniruddha
> Assignee: Aniruddha
> Fix For: 4.3.0
>
> Attachments:
> 0001-BOOKKEEPER-429-Provide-separate-read-and-write-threa.patch,
> 0001-BOOKKEEPER-429-Provide-separate-read-and-write-threa.patch,
> BK-429.patch, BOOKKEEPER-429.diff, BOOKKEEPER-429.diff, BOOKKEEPER-429.diff
>
>
> The current bookkeeper server is single threaded. The same thread handles
> reads and writes. When reads are slow (possibly because of excessive seeks),
> add entry operations suffer in terms of latencies. Providing separate read
> and write threads helps in reducing add entry latencies and increasing
> throughput even when we're facing slow reads. Having a single read thread
> also results in low disk utilization because seeks can't be ordered
> efficiently by the OS. Multiple read threads would help in improving the read
> throughput.
> Discussion on this can be found at
> http://mail-archives.apache.org/mod_mbox/zookeeper-bookkeeper-dev/201209.mbox/%3ccaolhydqpzn-v10zynfwud_h0qzrxtmjgttx7a9eofohyyty...@mail.gmail.com%3e
> Reviewboard : https://reviews.apache.org/r/7560/
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