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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7525) A canary monitoring program specifically for regionserver
Date Thu, 29 Aug 2013 10:16:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753486#comment-13753486

Hadoop QA commented on HBASE-7525:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 hadoop1.0{color}.  The patch compiles against the hadoop 1.0 profile.

    {color:green}+1 hadoop2.0{color}.  The patch compiles against the hadoop 2.0 profile.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 2 new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

    {color:red}-1 site{color}.  The patch appears to cause mvn site goal to fail.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/6962//console

This message is automatically generated.
> A canary monitoring program specifically for regionserver
> ---------------------------------------------------------
>                 Key: HBASE-7525
>                 URL: https://issues.apache.org/jira/browse/HBASE-7525
>             Project: HBase
>          Issue Type: New Feature
>          Components: monitoring
>    Affects Versions: 0.94.0
>            Reporter: takeshi.miao
>            Priority: Critical
>             Fix For: 0.98.0
>         Attachments: HBASE-7525-0.95-v0.patch, HBASE-7525-0.95-v1.patch, HBASE-7525-0.95-v3.patch,
HBASE-7525-0.95-v4.patch, HBASE-7525-0.95-v6.patch, HBASE-7525-trunk-v2.patch, HBASE-7525-v0.patch,
> *Motivation*
> This ticket is to provide a canary monitoring tool specifically for HRegionserver, details
as follows
> 1. This tool is required by operation team due to they thought that the canary for each
region of a HBase is too many for them, so I implemented this coarse-granular one based on
the original o.a.h.h.tool.Canary for them
> 2. And this tool is implemented by multi-threading, which means the each Get request
sent by a thread. the reason I use this way is due to we suffered the region server hung issue
by now the root cause is still not clear. so this tool can help operation team to detect hung
region server if any.
> *example*
> 1. the tool docs
> ./bin/hbase org.apache.hadoop.hbase.tool.RegionServerCanary -help
> Usage: [opts] [regionServerName 1 [regionServrName 2...]]
>  regionServerName - FQDN serverName, can use linux command:hostname -f to check your
>  where [-opts] are:
>    -help Show this help and exit.
>    -e    Use regionServerName as regular expression
>       which means the regionServerName is regular expression pattern
>    -f <B>         stop whole program if first error occurs, default is true
>    -t <N>         timeout for a check, default is 600000 (milisecs)
>    -daemon        Continuous check at defined intervals.
>    -interval <N>  Interval between checks (sec)
> 2. Will send a request to each regionserver in a HBase cluster
> ./bin/hbase org.apache.hadoop.hbase.tool.RegionServerCanary
> 3. Will send a request to a regionserver by given name
> ./bin/hbase org.apache.hadoop.hbase.tool.RegionServerCanary rs1.domainname
> 4. Will send a request to regionserver(s) by given regular-expression
> /opt/trend/circus-opstool/bin/hbase-canary-monitor-each-regionserver.sh -e rs1.domainname.pattern
> // another example
> ./bin/hbase org.apache.hadoop.hbase.tool.RegionServerCanary -e tw-poc-tm-puppet-hdn[0-9]\{1,2\}.client.tw.trendnet.org
> 5. Will send a request to a regionserver and also set a timeout limit for this test
> // query regionserver:rs1.domainname with timeout limit 10sec
> // -f false, means that will not exit this program even test failed
> ./bin/hbase org.apache.hadoop.hbase.tool.RegionServerCanary -f false -t 10000 rs1.domainname
> // echo "1" if timeout
> echo "$?"
> 6. Will run as daemon mode, which means it will send request to each regionserver periodically
> ./bin/hbase org.apache.hadoop.hbase.tool.RegionServerCanary -daemon

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