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https://issues.apache.org/jira/browse/HIVE-9619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Pivovarov updated HIVE-9619:
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Attachment: HIVE-9619.2.patch
patch #2 - make a, b, aValue and bValue final and init them as null in the
second constructor
> Uninitialized read of numBitVectors in NumDistinctValueEstimator
> ----------------------------------------------------------------
>
> Key: HIVE-9619
> URL: https://issues.apache.org/jira/browse/HIVE-9619
> Project: Hive
> Issue Type: Bug
> Reporter: Alexander Pivovarov
> Assignee: Alexander Pivovarov
> Priority: Minor
> Attachments: HIVE-9619.1.patch, HIVE-9619.2.patch
>
>
> {code}
> private int numBitVectors;
> // Refer to Flajolet-Martin'86 for the value of phi
> private final double phi = 0.77351;
> private int[] a;
> private int[] b;
> // Uninitialized read of numBitVectors
> private FastBitSet[] bitVector = new FastBitSet[numBitVectors];
> {code}
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