[ https://issues.apache.org/jira/browse/HIVE-17006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sergey Shelukhin updated HIVE-17006: ------------------------------------ Status: Patch Available (was: Open) > 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 > Attachments: HIVE-17006.patch, HIVE-17006.WIP.patch > > > 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)