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From "Zhihong Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6524) Hooks for hbase tracing
Date Wed, 22 Aug 2012 20:02:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439802#comment-13439802
] 

Zhihong Ted Yu commented on HBASE-6524:
---------------------------------------

Using snapshot build of htrace 1.49, I was able to run TestClusterBootOrder with hadoop 2.0
profile.
But the test failed with:
{code}
testBootRegionServerFirst(org.apache.hadoop.hbase.TestClusterBootOrder)  Time elapsed: 0.263
sec  <<< ERROR!
java.lang.IncompatibleClassChangeError: Implementing class
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at org.apache.hadoop.hbase.mapreduce.MapreduceTestingShim.<clinit>(MapreduceTestingShim.java:45)
        at org.apache.hadoop.hbase.HBaseTestingUtility.createDirsAndSetProperties(HBaseTestingUtility.java:475)
        at org.apache.hadoop.hbase.HBaseTestingUtility.startMiniDFSCluster(HBaseTestingUtility.java:426)
        at org.apache.hadoop.hbase.HBaseTestingUtility.startMiniDFSCluster(HBaseTestingUtility.java:392)
        at org.apache.hadoop.hbase.TestClusterBootOrder.setUp(TestClusterBootOrder.java:47)
{code}
The test passed with hadoop 1.0 profile.
                
> Hooks for hbase tracing
> -----------------------
>
>                 Key: HBASE-6524
>                 URL: https://issues.apache.org/jira/browse/HBASE-6524
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Jonathan Leavitt
>             Fix For: 0.96.0
>
>         Attachments: createTableTrace.png, hbase-6524.diff
>
>
> Includes the hooks that use [htrace|http://www.github.com/cloudera/htrace] library to
add dapper-like tracing to hbase.

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