steven-wugang created HDFS-12068:
------------------------------------
Summary: Modify judgment condition in function
computeVolumeDataDensity,otherwise maybe divided by zero
Key: HDFS-12068
URL: https://issues.apache.org/jira/browse/HDFS-12068
Project: Hadoop HDFS
Issue Type: Bug
Reporter: steven-wugang
IN function computeVolumeDataDensity,there is a piece of code,as follow:
public void computeVolumeDataDensity() {
...
if (volume.computeEffectiveCapacity() < 0) {
skipMisConfiguredVolume(volume);
continue;
}
....
double dfsUsedRatio =
truncateDecimals(volume.getUsed() /
(double) volume.computeEffectiveCapacity());
....
}
Did not filter out the case that volume.computeEffectiveCapacity() is
zero，maybe divided by zero behind.
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