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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1418) Transacitonal improvments and fixes
Date Wed, 13 May 2009 21:46:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12709141#action_12709141
] 

stack commented on HBASE-1418:
------------------------------

Doesn't build Clint:

{code}
    [javac] Compiling 240 source files to /Users/stack/checkouts/hbase/branches/0.19/build/classes
    [javac] /Users/stack/checkouts/hbase/branches/0.19/src/java/org/apache/hadoop/hbase/client/transactional/TransactionManager.java:46:
cannot find symbol
    [javac] symbol  : class JtaXAResource
    [javac] location: class org.apache.hadoop.hbase.client.transactional.TransactionManager
    [javac]   private JtaXAResource xAResource;
    [javac]           ^
    [javac] /Users/stack/checkouts/hbase/branches/0.19/src/java/org/apache/hadoop/hbase/client/transactional/TransactionManager.java:236:
cannot find symbol
    [javac] symbol  : class JtaXAResource
    [javac] location: class org.apache.hadoop.hbase.client.transactional.TransactionManager
    [javac]   public synchronized JtaXAResource getXAResource() {
    [javac]                       ^
    [javac] /Users/stack/checkouts/hbase/branches/0.19/src/java/org/apache/hadoop/hbase/client/transactional/TransactionManager.java:238:
cannot find symbol
    [javac] symbol  : class JtaXAResource
    [javac] location: class org.apache.hadoop.hbase.client.transactional.TransactionManager
    [javac]       xAResource = new JtaXAResource(this);
    [javac]                        ^
    [javac] Note: Some input files use or override a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
{code}

JXTA!!!?


> Transacitonal improvments and fixes
> -----------------------------------
>
>                 Key: HBASE-1418
>                 URL: https://issues.apache.org/jira/browse/HBASE-1418
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: client, regionserver
>            Reporter: Clint Morgan
>             Fix For: 0.19.2
>
>         Attachments: 1418-0.19-v2.diff, 1418-0.19.diff
>
>
> A number of improvements and fixes to the transactional server:
> - Use a lease listener to detect and remove dead transactions
> - Handle splitting/closing during transactions
> - improve 2-phase commit protocol to save some traffic for read only commits
> - expose as a JTA resource so we can work with other transactional resources
> - additional logging

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