[ https://issues.apache.org/jira/browse/HBASE-13420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14529640#comment-14529640 ]
zhangduo commented on HBASE-13420: ---------------------------------- This patch introduces 3 high priority findbugs warnings(VO_VOLATILE_INCREMENT). Mind I open a issue to change 'size' from volatile to AtomicLong? [~apurtell]. Thanks. > 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: Andrew Purtell > Fix For: 2.0.0, 0.98.13, 1.0.2, 1.2.0, 1.1.1 > > Attachments: 1M-0.98.12.svg, 1M-0.98.13-SNAPSHOT.svg, > HBASE-13420.patch, HBASE-13420.txt, hbase-13420.tar.gz, > 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)