[HIVE-24703] LLAP move RowGroup reading to StrippePlanner - ASF JIRA

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Details

Type: Improvement
Status: Open
Priority: Trivial
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: None
Component/s: llap
Labels:
None

Description

LlapDataREader is almost identical to ORC's DataREader, however the main issue the readFileData method of the latter takes a DiskRangeList instead of a BufferChunkList.

~~ORC-1~~.6 uses a separate StripePlanner that reads RowGroups converting them to BufferChunks while in LLAP we are doing our own custom planning with DiskRanges.

I am opening this ticket to explore moving LLAP to Stripe planning