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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7220) Creating a table with 3000 regions on 2 nodes fails after 1 hour
Date Mon, 26 Nov 2012 21:10:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13504098#comment-13504098
] 

Hadoop QA commented on HBASE-7220:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12554899/HBASE-7220-0.patch
  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
tests.
                        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 hadoop2.0{color}.  The patch compiles against the hadoop 2.0 profile.

    {color:red}-1 javadoc{color}.  The javadoc tool appears to have generated 98 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 26 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 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/3404//console

This message is automatically generated.
                
> Creating a table with 3000 regions on 2 nodes fails after 1 hour
> ----------------------------------------------------------------
>
>                 Key: HBASE-7220
>                 URL: https://issues.apache.org/jira/browse/HBASE-7220
>             Project: HBase
>          Issue Type: Bug
>          Components: metrics, Performance, regionserver
>    Affects Versions: 0.96.0
>            Reporter: nkeywal
>            Assignee: Elliott Clark
>         Attachments: HBASE-7220-0.patch
>
>
> I'm trying to create a table with 3000 regions on two regions servers, from the shell.
> It's ok on trunk a standalone config.
> It's ok on 0.94
> It's not ok on trunk: it fails after around 1 hour.
> If I remove all the code related to metrics in HRegion, the 3000 regions are created
in 3 minutes (twice faster than the 0.94).
> On trunk, the region server spends its time in "waitForWork", while the master is in
the tcp connection related code. It's a 1Gb network.
> I haven't looked at the metric code itself.
> Patch used to remove the metrics from HRegion:
> {noformat}
> index c70e9ab..6677e65 100644
> --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
> +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
> @@ -364,7 +364,7 @@ public class HRegion implements HeapSize { // , Writable{
>    private HTableDescriptor htableDescriptor = null;
>    private RegionSplitPolicy splitPolicy;
>  
> -  private final MetricsRegion metricsRegion;
> +  private final MetricsRegion metricsRegion = null;
>  
>    /**
>     * Should only be used for testing purposes
> @@ -388,7 +388,7 @@ public class HRegion implements HeapSize { // , Writable{
>      this.coprocessorHost = null;
>      this.scannerReadPoints = new ConcurrentHashMap<RegionScanner, Long>();
>  
> -    this.metricsRegion = new MetricsRegion(new MetricsRegionWrapperImpl(this));
> +    //this.metricsRegion = new MetricsRegion(new MetricsRegionWrapperImpl(this));
>    }
>  
>    /**
> @@ -451,7 +451,7 @@ public class HRegion implements HeapSize { // , Writable{
>      this.regiondir = getRegionDir(this.tableDir, encodedNameStr);
>      this.scannerReadPoints = new ConcurrentHashMap<RegionScanner, Long>();
>  
> -    this.metricsRegion = new MetricsRegion(new MetricsRegionWrapperImpl(this));
> +    //this.metricsRegion = new MetricsRegion(new MetricsRegionWrapperImpl(this));
>  
>      /*
>       * timestamp.slop provides a server-side constraint on the timestamp. This
> @@ -1024,7 +1024,7 @@ public class HRegion implements HeapSize { // , Writable{
>          status.setStatus("Running coprocessor post-close hooks");
>          this.coprocessorHost.postClose(abort);
>        }
> -      this.metricsRegion.close();
> +      //this.metricsRegion.close();
>        status.markComplete("Closed");
>        LOG.info("Closed " + this);
>        return result;
> @@ -2331,11 +2331,11 @@ public class HRegion implements HeapSize { // , Writable{
>        if (noOfPuts > 0) {
>          // There were some Puts in the batch.
>          double noOfMutations = noOfPuts + noOfDeletes;
> -        this.metricsRegion.updatePut();
> +        //this.metricsRegion.updatePut();
>        }
>        if (noOfDeletes > 0) {
>          // There were some Deletes in the batch.
> -        this.metricsRegion.updateDelete();
> +        //this.metricsRegion.updateDelete();
>        }
>        if (!success) {
>          for (int i = firstIndex; i < lastIndexExclusive; i++) {
> @@ -4270,7 +4270,7 @@ public class HRegion implements HeapSize { // , Writable{
>  
>      // do after lock
>  
> -    this.metricsRegion.updateGet();
> +    //this.metricsRegion.updateGet();
>  
>      return results;
>    }
> @@ -4657,7 +4657,7 @@ public class HRegion implements HeapSize { // , Writable{
>        closeRegionOperation();
>      }
>  
> -    this.metricsRegion.updateAppend();
> +    //this.metricsRegion.updateAppend();
>  
>  
>      if (flush) {
> @@ -4795,7 +4795,7 @@ public class HRegion implements HeapSize { // , Writable{
>          mvcc.completeMemstoreInsert(w);
>        }
>        closeRegionOperation();
> -      this.metricsRegion.updateIncrement();
> +      //this.metricsRegion.updateIncrement();
>      }
>  
>      if (flush) {
> {noformat}

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