Xiao Chen created HADOOP-15023:
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Summary: ValueQueue should also validate (lowWatermark *
numValues) > 0 on construction
Key: HADOOP-15023
URL: https://issues.apache.org/jira/browse/HADOOP-15023
Project: Hadoop Common
Issue Type: Improvement
Reporter: Xiao Chen
Priority: Minor
ValueQueue has precondition checks for each item independently, but does not
check {{(int)(lowWatermark * numValues) > 0}}. If the product is low enough,
casting to int will wrap that to 0, causing problems later when filling /
getting from the queue.
[code|https://github.com/apache/hadoop/blob/branch-3.0.0-beta1/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/ValueQueue.java#L224]
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