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https://issues.apache.org/jira/browse/HBASE-20654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16493665#comment-16493665
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Ted Yu commented on HBASE-20654:
--------------------------------
{code}
+
metricsRecordBuilder.tag(Interns.info(REGIONS_STATE_FAILED_OPEN,REGIONS_STATE_FAILED_OPEN_DESC),metricsAssignmentWrapper.getFailedOpenRegions());
{code}
Please limit line length to 100 characters.
{code}
+// assignmentManagerSource = CompatibilitySingletonFactory.getInstance(
+// MetricsAssignmentManagerSource.class);
{code}
Drop commented out code.
{code}
+ public static final String
METRIC_MAXNUM_REGIONS_IN_EACH_STATE="hbase.assignment.metric.maxmum.regions.in.each.state";
typo: maxnum -> maximum. If you meant maximum number of regions, use "max.num"
instead.
{code}
+ private static final int DEFAULT_METRIC_MAXNUM_REGIONS_IN_EACH_STATE = 200;
{code}
Consider lowering the default count since the count is per state. How about
using 100 as the default ?
{code}
+ protected int getMaxnumRegionInEachState(){
{code}
num -> Num
Region -> Regions
{code}
+ return StringUtils.join(regions, ",");
{code}
I think using ', ' as delimiter would make the output more readable.
> Expose regions in transition thru JMX
> -------------------------------------
>
> Key: HBASE-20654
> URL: https://issues.apache.org/jira/browse/HBASE-20654
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Assignee: liubangchen
> Priority: Major
> Attachments: HBASE-20654-1.patch
>
>
> Currently only the count of regions in transition is exposed thru JMX.
> Here is a sample snippet of the /jmx output:
> {code}
> {
> "beans" : [ {
> ...
> }, {
> "name" : "Hadoop:service=HBase,name=Master,sub=AssignmentManager",
> "modelerType" : "Master,sub=AssignmentManager",
> "tag.Context" : "master",
> ...
> "ritCount" : 3
> {code}
> It would be desirable to expose region name, state for the regions in
> transition as well.
> We can place configurable upper bound on the number of entries returned in
> case there're a lot of regions in transition.
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