hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "ChiaPing Tsai (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-16855) Avoid NPE in MetricsConnection’s construction
Date Mon, 17 Oct 2016 08:57:58 GMT

     [ https://issues.apache.org/jira/browse/HBASE-16855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ChiaPing Tsai updated HBASE-16855:
----------------------------------
    Status: Open  (was: Patch Available)

> 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, 1.4.0
>
>         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)

Mime
View raw message