[HIVE-9619] Uninitialized read of numBitVectors in NumDistinctValueEstimator

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: Statistics
• Release Note: Uninitialized read of numBitVectors in NumDistinctValueEstimator
• Assignee: Alexander Pivovarov
• Reporter: Alexander Pivovarov
• Created: 09/Feb/15 08:09
• Updated: 18/May/15 19:51
• Resolved: 17/Feb/15 18:34

Description

  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];

Issue Links

• links to: https://reviews.apache.org/r/30789/