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Surendra Singh Lilhore commented on HDFS-14235: ----------------------------------------------- [~lindongdong], v1 patch is calling sleep() two time for same sleep interval and it can be handle with one simple if check without creating sleep() method. > Handle ArrayIndexOutOfBoundsException in > DataNodeDiskMetrics#slowDiskDetectionDaemon > ------------------------------------------------------------------------------------- > > Key: HDFS-14235 > URL: https://issues.apache.org/jira/browse/HDFS-14235 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Surendra Singh Lilhore > Assignee: Ranith Sardar > Priority: Major > Attachments: HDFS-14235.000.patch, HDFS-14235.001.patch, > HDFS-14235.002.patch, HDFS-14235.003.patch, NPE.png, exception.png > > > below code throwing exception because {{volumeIterator.next()}} called two > time without checking hashNext(). > {code:java} > while (volumeIterator.hasNext()) { > FsVolumeSpi volume = volumeIterator.next(); > DataNodeVolumeMetrics metrics = volumeIterator.next().getMetrics(); > String volumeName = volume.getBaseURI().getPath(); > metadataOpStats.put(volumeName, > metrics.getMetadataOperationMean()); > readIoStats.put(volumeName, metrics.getReadIoMean()); > writeIoStats.put(volumeName, metrics.getWriteIoMean()); > }{code} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org