[ https://issues.apache.org/jira/browse/HBASE-16855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ChiaPing Tsai updated HBASE-16855: ---------------------------------- Attachment: HBASE-16855.v1.patch add some trivial change on hbase-server module > Avoid NPE in MetricsConnection’s construction > --------------------------------------------- > > Key: HBASE-16855 > URL: https://issues.apache.org/jira/browse/HBASE-16855 > Project: HBase > Issue Type: Bug > Affects Versions: 2.0.0 > Reporter: ChiaPing Tsai > Assignee: ChiaPing Tsai > Priority: Minor > Fix For: 2.0.0 > > Attachments: HBASE-16855.v0.patch, HBASE-16855.v1.patch > > > a) The batch pool may not be assigned a value in the ConnectionImpl’s > construction. > b) The meta pool always be null in the ConnectionImpl’s construction. > For reasons outlined above, the NPE may happen in MetricsConnection’s > construction > {noformat} > final ThreadPoolExecutor batchPool = (ThreadPoolExecutor) > conn.getCurrentBatchPool(); > final ThreadPoolExecutor metaPool = (ThreadPoolExecutor) > conn.getCurrentMetaLookupPool(); > this.registry.register(name(this.getClass(), "executorPoolActiveThreads", > scope), > new RatioGauge() { > @Override > protected Ratio getRatio() { > return Ratio.of(batchPool.getActiveCount(), > batchPool.getMaximumPoolSize()); > } > }); > this.registry.register(name(this.getClass(), "metaPoolActiveThreads", > scope), > new RatioGauge() { > @Override > protected Ratio getRatio() { > return Ratio.of(metaPool.getActiveCount(), > metaPool.getMaximumPoolSize()); > } > }); > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)