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Posted to hdfs-dev@hadoop.apache.org by "Surendra Singh Lilhore (JIRA)" <ji...@apache.org> on 2019/01/28 08:59:00 UTC
[jira] [Created] (HDFS-14235) Handle ArrayIndexOutOfBoundsException
in DataNodeDiskMetrics#slowDiskDetectionDaemon
Surendra Singh Lilhore created HDFS-14235:
---------------------------------------------
Summary: 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
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}
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