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Posted to issues@hbase.apache.org by "Toshihiro Suzuki (JIRA)" <ji...@apache.org> on 2018/01/01 14:51:02 UTC
[jira] [Updated] (HBASE-19424) Metrics servlet doesn't work
[ https://issues.apache.org/jira/browse/HBASE-19424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Toshihiro Suzuki updated HBASE-19424:
-------------------------------------
Assignee: Toshihiro Suzuki
Status: Patch Available (was: Open)
> Metrics servlet doesn't work
> ----------------------------
>
> Key: HBASE-19424
> URL: https://issues.apache.org/jira/browse/HBASE-19424
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.4.0
> Reporter: Andrew Purtell
> Assignee: Toshihiro Suzuki
> Priority: Minor
> Fix For: 1.4.1, 1.5.0
>
> Attachments: HBASE-19424.branch-1.patch
>
>
> In branch-1 at least we put up a servlet on "/metrics" that is Hadoop's MetricsServlet. However HBase users are expected to pick up metrics via "/jmx". We don't mention "/metrics" or link to it on the UI. If you attempt to access "/metrics" with head of branch-1 it errors out due to a NPE
> {noformat}
> 2017-12-04 16:06:37,403 ERROR [1874557409@qtp-1910896157-3] mortbay.log: /metrics
> java.lang.NullPointerException
> at org.apache.hadoop.http.HttpServer2.isInstrumentationAccessAllowed(HttpServer2.java:1049)
> at org.apache.hadoop.metrics.MetricsServlet.doGet(MetricsServlet.java:109)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
> {noformat}
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