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https://issues.apache.org/jira/browse/HDDS-354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16591229#comment-16591229
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Dinesh Chitlangia edited comment on HDDS-354 at 8/24/18 6:58 AM:
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[~ajayydv] - Would you be able to share steps to repro?
I investigated VolumeInfo and VolumeUsage classes. I suspect we have a bigger
problem that has somehow managed to sneak :)
Clearly the VolumeUsage instance was null and led to this issue.
Quick fix -
{quote}{{public long getScmUsed() throws IOException {}}
if(usage != null)
{{ return usage.getScmUsed();}}
} else {
{{ return 0L;}}
}
{{}}}
{quote}
However, I think we must investigate and address why VolumeUsage instance was
null.
This can affect VolumeInfo#getCapacity() and VolumeInfo#getAvailable() too.
Alternate: We must check if usage is null log an ERROR after this line:
{{this.usage = new VolumeUsage(root, b.conf);}}
was (Author: dineshchitlangia):
[~ajayydv] - Would you be able to share steps to repro?
I investigated VolumeInfo and VolumeUsage classes. I suspect we have a bigger
problem that has somehow managed to sneak :)
Clearly the VolumeUsage instance was null and led to this issue.
Quick fix -
{{public long getScmUsed() throws IOException {}}
{{ if(usage != null){}}
{{ return usage.getScmUsed();}}
{{ } else {}}
{{ return 0L;}}
{{ }}}
{{}}}
However, I think we must investigate and address why VolumeUsage instance was
null.
This can affect VolumeInfo#getCapacity() and VolumeInfo#getAvailable() too.
Alternate: We must check if usage is null log an ERROR after this line:
{{this.usage = new VolumeUsage(root, b.conf);}}
> VolumeInfo.getScmUsed throws NPE
> --------------------------------
>
> Key: HDDS-354
> URL: https://issues.apache.org/jira/browse/HDDS-354
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Reporter: Ajay Kumar
> Priority: Major
>
> {code}java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.container.common.volume.VolumeInfo.getScmUsed(VolumeInfo.java:107)
> at
> org.apache.hadoop.ozone.container.common.volume.VolumeSet.getNodeReport(VolumeSet.java:366)
> at
> org.apache.hadoop.ozone.container.ozoneimpl.OzoneContainer.getNodeReport(OzoneContainer.java:264)
> at
> org.apache.hadoop.ozone.container.common.report.NodeReportPublisher.getReport(NodeReportPublisher.java:64)
> at
> org.apache.hadoop.ozone.container.common.report.NodeReportPublisher.getReport(NodeReportPublisher.java:39)
> at
> org.apache.hadoop.ozone.container.common.report.ReportPublisher.publishReport(ReportPublisher.java:86)
> at
> org.apache.hadoop.ozone.container.common.report.ReportPublisher.run(ReportPublisher.java:73)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
> at java.util.concurrent.FutureTask.run(FutureTask.java)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745){code}
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