hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12911) Client-side metrics
Date Tue, 15 Sep 2015 21:44:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14746306#comment-14746306
] 

Hadoop QA commented on HBASE-12911:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12756082/12911-branch-1.00.patch
  against branch-1.0 branch at commit 938d2a0c9cfa4c033ccc72de490672f151bb0351.
  ATTACHMENT ID: 12756082

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

    {color:green}+1 tests included{color}.  The patch appears to include 41 new or modified
tests.

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/15609//console

This message is automatically generated.

> Client-side metrics
> -------------------
>
>                 Key: HBASE-12911
>                 URL: https://issues.apache.org/jira/browse/HBASE-12911
>             Project: HBase
>          Issue Type: New Feature
>          Components: Client, Operability, Performance
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>             Fix For: 2.0.0, 1.3.0
>
>         Attachments: 0001-HBASE-12911-Client-side-metrics.patch, 0001-HBASE-12911-Client-side-metrics.patch,
0001-HBASE-12911-Client-side-metrics.patch, 0001-HBASE-12911-Client-side-metrics.patch, 0001-HBASE-12911-Client-side-metrics.patch,
0001-HBASE-12911-Client-side-metrics.patch, 0001-HBASE-12911-Client-side-metrics.patch, 0001-HBASE-12911-Client-side-metrics.patch,
0001-HBASE-12911-Client-side-metrics.patch, 0001-HBASE-12911-Client-side-metrics.patch, 0001-HBASE-12911-Client-side-metrics.patch,
12911-branch-1.00.patch, am.jpg, client metrics RS-Master.jpg, client metrics client.jpg,
conn_agg.jpg, connection attributes.jpg, ltt.jpg, standalone.jpg
>
>
> There's very little visibility into the hbase client. Folks who care to add some kind
of metrics collection end up wrapping Table method invocations with {{System.currentTimeMillis()}}.
For a crude example of this, have a look at what I did in {{PerformanceEvaluation}} for exposing
requests latencies up to {{IntegrationTestRegionReplicaPerf}}. The client is quite complex,
there's a lot going on under the hood that is impossible to see right now without a profiler.
Being a crucial part of the performance of this distributed system, we should have deeper
visibility into the client's function.
> I'm not sure that wiring into the hadoop metrics system is the right choice because the
client is often embedded as a library in a user's application. We should have integration
with our metrics tools so that, i.e., a client embedded in a coprocessor can report metrics
through the usual RS channels, or a client used in a MR job can do the same.
> I would propose an interface-based system with pluggable implementations. Out of the
box we'd include a hadoop-metrics implementation and one other, possibly [dropwizard/metrics|https://github.com/dropwizard/metrics].
> Thoughts?



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message