You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hbase.apache.org by "John Leach (JIRA)" <ji...@apache.org> on 2015/04/07 22:53:12 UTC
[jira] [Assigned] (HBASE-13420)
RegionEnvironment.offerExecutionLatency Blocks Threads under Heavy Load
[ https://issues.apache.org/jira/browse/HBASE-13420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
John Leach reassigned HBASE-13420:
----------------------------------
Assignee: John Leach
> RegionEnvironment.offerExecutionLatency Blocks Threads under Heavy Load
> -----------------------------------------------------------------------
>
> Key: HBASE-13420
> URL: https://issues.apache.org/jira/browse/HBASE-13420
> Project: HBase
> Issue Type: Improvement
> Reporter: John Leach
> Assignee: John Leach
> Attachments: offerExecutionLatency.tiff
>
> Original Estimate: 3h
> Remaining Estimate: 3h
>
> The ArrayBlockingQueue blocks threads for 20s during a performance run focusing on creating numerous small scans.
> I see a buffer size of (100)
> private final BlockingQueue<Long> coprocessorTimeNanos = new ArrayBlockingQueue<Long>(
> LATENCY_BUFFER_SIZE);
> and then I see a drain coming from
> MetricsRegionWrapperImpl with 45 second executor
> HRegionMetricsWrapperRunable
> RegionCoprocessorHost#getCoprocessorExecutionStatistics()
> RegionCoprocessorHost#getExecutionLatenciesNanos()
> Am I missing something?
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)