Tsz Wo (Nicholas), SZE created HDFS-4797:
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Summary: BlockScanInfo does not override equals(..) and hashCode()
consistently
Key: HDFS-4797
URL: https://issues.apache.org/jira/browse/HDFS-4797
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Tsz Wo (Nicholas), SZE
In the code below, equals(..) compares lastScanTime but hashCode() is computed
using block ID. Therefore, it could have two BlockScanInfo objects which are
equal but have two different hash codes.
{code}
//BlockScanInfo
@Override
public int hashCode() {
return block.hashCode();
}
@Override
public boolean equals(Object other) {
return other instanceof BlockScanInfo &&
compareTo((BlockScanInfo)other) == 0;
}
{code}
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