[jira] [Created] (FLINK-13054) [Java] Support compact fixed-width vectors

[Shang Yuanchun (Jira)]

Ji Liu created FLINK-13054:
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             Summary: [Java] Support compact fixed-width vectors
                 Key: FLINK-13054
                 URL: https://issues.apache.org/jira/browse/FLINK-13054
             Project: Flink
          Issue Type: New Feature
            Reporter: Ji Liu
            Assignee: Ji Liu


In shuffle stage of some applications, FixedWitdhVectors may have very little non-null data.
In this case, directly serialize vectors is not a good choice, generally we can compact the vector make it only holding non-null value and create a BitVector to trace the indices for non-null values so that it could be deserialized properly.





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