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https://issues.apache.org/jira/browse/BOOKKEEPER-196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13255468#comment-13255468
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Hudson commented on BOOKKEEPER-196:
-----------------------------------

Integrated in bookkeeper-trunk #462 (See 
[https://builds.apache.org/job/bookkeeper-trunk/462/])
    BOOKKEEPER-196: Define interface between bookie and ledger storage (ivank) 
(Revision 1327027)

     Result = ABORTED
ivank : 
Files : 
* /zookeeper/bookkeeper/trunk/CHANGES.txt
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Bookie.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/EntryLogger.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/GarbageCollectorThread.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/HandleFactoryImpl.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/InterleavedLedgerStorage.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/LedgerDescriptor.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/LedgerDescriptorImpl.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/LedgerDescriptorReadOnlyImpl.java
* 
/zookeeper/bookkeeper/trunk/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/LedgerStorage.java

                
> Define interface between bookie and ledger storage
> --------------------------------------------------
>
>                 Key: BOOKKEEPER-196
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-196
>             Project: Bookkeeper
>          Issue Type: Improvement
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>             Fix For: 4.1.0
>
>         Attachments: BOOKKEEPER-196.diff, BOOKKEEPER-196.diff, 
> BOOKKEEPER-196.diff
>
>
> EntryLogger and LedgerCache are both part of a very interdependent storage 
> mechanism where entries are interleaved in a single log(EntryLogger) and 
> index files are maintained (LedgerCache). I'd like to experiment with some 
> other schemes (Im not convinced the interleaving is required for high 
> performance). ZOOKEEPER-507 brought in these changes, but it also brought in 
> a lot of other stuff, and I think its the other stuff (specifically taking 
> the writing to separate files out of the critical path) which gave us the 
> performance boost. To do this cleanly, we need a well defined storage 
> interface for this. This JIRA is to provide this. Future work can move the 
> interleaved implementation into another package as 
> org.apache.bookkeeper.bookie is getting a little crowded now.

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