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https://issues.apache.org/jira/browse/BOOKKEEPER-218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254736#comment-13254736
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[email protected] commented on BOOKKEEPER-218:
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bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15468>

    I'd prefer if this was simply called Journal. JournalManager is a class in 
HDFS, so having it here also will muddle things in my mind.



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15467>

    Should be private
    



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15466>

    Should be private



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15469>

    private
    



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15470>

    private
    



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15471>

    private



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15472>

    I would suggest calling the thread BookieJournal- so that it can be be 
identified when running a lot of other systems in a single process, such as for 
testing.



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15473>

    never used, remove



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15474>

    It would be good to have a comment here stating what marking the log means.



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15475>

    private
    



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15476>

    I would suggest calling this simply replay()



bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
<https://reviews.apache.org/r/4737/#comment15477>

    There's an asymmetry between this and the method for reading, 
JournalScanner.
    
    This takes an entry, a ledgerId, and an entryId. 
    
    JournalScanner only gets an entry buffer back. 
    
    Logically Journal shouldn't care about entryid or ledgerid. I think 
logAddEntry should only have (ByteBuffer entry, WriteCallback cb, Object ctx) 
as the parameter list.


- Ivan


On 2012-04-16 13:57:54, Sijie Guo wrote:
bq.  
bq.  -----------------------------------------------------------
bq.  This is an automatically generated e-mail. To reply, visit:
bq.  https://reviews.apache.org/r/4737/
bq.  -----------------------------------------------------------
bq.  
bq.  (Updated 2012-04-16 13:57:54)
bq.  
bq.  
bq.  Review request for bookkeeper.
bq.  
bq.  
bq.  Summary
bq.  -------
bq.  
bq.  Currently we put all journal related operations in Bookie class. It would 
be better to provide a journal manager to provide journal related operations. 
It would make Bookie logic more clearly.
bq.  
bq.  Besides that, some admin tools like BOOKKEEPER-183 needs to provide could 
use JournalManager to read/check journal files directly.
bq.  
bq.  
bq.  This addresses bug BOOKKEEPER-218.
bq.      https://issues.apache.org/jira/browse/BOOKKEEPER-218
bq.  
bq.  
bq.  Diffs
bq.  -----
bq.  
bq.    bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Bookie.java 
bbf561a 
bq.    
bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/BookieBean.java 
fa5171b 
bq.    
bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/BookieMXBean.java 
8418469 
bq.    
bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/JournalManager.java
 PRE-CREATION 
bq.    
bookkeeper-server/src/test/java/org/apache/bookkeeper/test/BookKeeperClusterTestCase.java
 c172224 
bq.    
bookkeeper-server/src/test/java/org/apache/bookkeeper/test/BookieJournalRollingTest.java
 e795fce 
bq.  
bq.  Diff: https://reviews.apache.org/r/4737/diff
bq.  
bq.  
bq.  Testing
bq.  -------
bq.  
bq.  
bq.  Thanks,
bq.  
bq.  Sijie
bq.  
bq.


                
> Provide journal manager to manage journal related operations
> ------------------------------------------------------------
>
>                 Key: BOOKKEEPER-218
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-218
>             Project: Bookkeeper
>          Issue Type: Improvement
>          Components: bookkeeper-server
>    Affects Versions: 4.1.0
>            Reporter: Sijie Guo
>            Assignee: Sijie Guo
>             Fix For: 4.1.0
>
>         Attachments: BK-218.diff
>
>
> Currently we put all journal related operations in Bookie class. It would be 
> better to provide a journal manager to provide journal related operations. It 
> would make Bookie logic more clearly. 
> Besides that, some admin tools like BOOKKEEPER-183 needs to provide could use 
> JournalManager to read/check journal files directly.

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