Prasanth Jayachandran created HIVE-9757:
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Summary: LLAP: Reuse string dictionaries per column per stripe
when processing row groups
Key: HIVE-9757
URL: https://issues.apache.org/jira/browse/HIVE-9757
Project: Hive
Issue Type: Sub-task
Affects Versions: llap
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
Fix For: llap
Dictionary streams are cached by low level cache. When creating column vectors
from streams we create dictionary for every row group that we process. We
should add per query cache to cache the deserialized representation of
dictionary per stripe per column.
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