[jira] [Created] (ASTERIXDB-2005) ArithmeticException on dataset rebalance to a node group with no nodes

["Murtadha Hubail (JIRA)" <ji...@apache.org>]

Murtadha Hubail created ASTERIXDB-2005:
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             Summary: ArithmeticException on dataset rebalance to a node group with no nodes
                 Key: ASTERIXDB-2005
                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2005
             Project: Apache AsterixDB
          Issue Type: Bug
          Components: CLUS - Cluster management
            Reporter: Murtadha Hubail
            Assignee: Murtadha Hubail


When a dataset rebalance is done over a node group with no nodes, the following exception is encountered:

{code:java}
java.lang.ArithmeticException: / by zero
	at org.apache.asterix.metadata.declared.MetadataProvider.getCardinalityPerPartitionHint(MetadataProvider.java:719) ~[asterix-metadata-0.9.2-SNAPSHOT.jar:0.9.2-SNAPSHOT]
	at org.apache.asterix.metadata.utils.SecondaryIndexOperationsHelper.init(SecondaryIndexOperationsHelper.java:198) ~[asterix-metadata-0.9.2-SNAPSHOT.jar:0.9.2-SNAPSHOT]
	at org.apache.asterix.metadata.utils.SecondaryIndexOperationsHelper.createIndexOperationsHelper(SecondaryIndexOperationsHelper.java:163) ~[asterix-metadata-0.9.2-SNAPSHOT.jar:0.9.2-SNAPSHOT]
	at org.apache.asterix.metadata.utils.IndexUtil.buildDropIndexJobSpec(IndexUtil.java:112) ~[asterix-metadata-0.9.2-SNAPSHOT.jar:0.9.2-SNAPSHOT]
	at org.apache.asterix.utils.RebalanceUtil.dropDatasetFiles(RebalanceUtil.java:330) ~[asterix-app-0.9.2-SNAPSHOT.jar:0.9.2-SNAPSHOT]
	at org.apache.asterix.utils.RebalanceUtil.rebalance(RebalanceUtil.java:200) ~[asterix-app-0.9.2-SNAPSHOT.jar:0.9.2-SNAPSHOT]
	at org.apache.asterix.utils.RebalanceUtil.rebalance(RebalanceUtil.java:124) ~[asterix-app-0.9.2-SNAPSHOT.jar:0.9.2-SNAPSHOT]
{code}

The proposed solution is to treat rebalance to no nodes as a drop dataset.



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