Sergey Shelukhin created HIVE-17006:
---------------------------------------
Summary: LLAP: Parquet caching
Key: HIVE-17006
URL: https://issues.apache.org/jira/browse/HIVE-17006
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
Assignee: Sergey Shelukhin
There are multiple options to do Parquet caching in LLAP:
1) Full elevator (too intrusive for now).
2) Page based cache like ORC (requires some changes to Parquet or copy-pasted).
3) Cache disk data on column chunk level as is.
Given that Parquet reads at column chunk granularity, (2) is not as useful as
for ORC, but still a good idea. I messaged the dev list about it but didn't get
a response, we may follow up later.
For now, do (3).
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
