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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CHUKWA-373) backpressure could work better
Date Wed, 19 Aug 2009 16:51:14 GMT

    [ https://issues.apache.org/jira/browse/CHUKWA-373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745120#action_12745120
] 

Eric Yang commented on CHUKWA-373:
----------------------------------

Fresh checkout, the build didn't compile after I applied the new patch.

compile-src:
    [javac] Compiling 2 source files to /Users/eyang/sandbox/chukwa/trunk/build/contrib/chukwa-xtrace/classes
    [javac] /Users/eyang/sandbox/chukwa/trunk/contrib/xtrace/src/java/edu/berkeley/chukwa_xtrace/XtrAdaptor.java:116:
warning: [deprecation] hardStop() in org.apache.hadoop.chukwa.datacollection.adaptor.Adaptor
has been deprecated
    [javac]   public void hardStop() throws AdaptorException {
    [javac]               ^
    [javac] /Users/eyang/sandbox/chukwa/trunk/contrib/xtrace/src/java/edu/berkeley/chukwa_xtrace/XtrAdaptor.java:121:
warning: [deprecation] shutdown() in org.apache.hadoop.chukwa.datacollection.adaptor.Adaptor
has been deprecated
    [javac]   public long shutdown() throws AdaptorException {
    [javac]               ^
    [javac] /Users/eyang/sandbox/chukwa/trunk/contrib/xtrace/src/java/edu/berkeley/chukwa_xtrace/XtrAdaptor.java:105:
getCurrentStatus() in edu.berkeley.chukwa_xtrace.XtrAdaptor cannot implement getCurrentStatus()
in org.apache.hadoop.chukwa.datacollection.adaptor.Adaptor; overridden method does not throw
org.apache.hadoop.chukwa.datacollection.adaptor.AdaptorException
    [javac]   public String getCurrentStatus() throws AdaptorException {
    [javac]                 ^
    [javac] 1 error
    [javac] 2 warnings

BUILD FAILED
/Users/eyang/sandbox/chukwa/trunk/build.xml:460: The following error occurred while executing
this line:
/Users/eyang/sandbox/chukwa/trunk/contrib/build.xml:30: The following error occurred while
executing this line:
/Users/eyang/sandbox/chukwa/trunk/contrib/xtrace/build.xml:211: Compile failed; see the compiler
error output for details.


> backpressure could work better
> ------------------------------
>
>                 Key: CHUKWA-373
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-373
>             Project: Hadoop Chukwa
>          Issue Type: Bug
>          Components: data collection
>            Reporter: Ari Rabkin
>            Assignee: Ari Rabkin
>         Attachments: CHUKWA-373.patch, CHUKWA-373.patch
>
>
> To some extent, we rely on backpressure from collectors to throttle agent sends. This
should be cleaned up and tested.

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