James Taylor created PHOENIX-2028:
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Summary: Improve performance of write path
Key: PHOENIX-2028
URL: https://issues.apache.org/jira/browse/PHOENIX-2028
Project: Phoenix
Issue Type: Bug
Reporter: James Taylor
The following improvements can be made to bring the cost of UPSERT VALUES more
inline with direct HBase API usage:
- don't re-compile a prepared UPSERT VALUES statement that is re-executed (see
patch on PHOENIX-1711).
- change MutationState to use a List instead of a Map at the top level. It's ok
to have duplicate rows here, as they'll get folded together when we generate
the List<Mutation>.
- change each mutation in the list to be a simple List<byte[]>. We can keep a
pointer to the PTable and a List<int> of positions into the PTable columns
instead of maintaining a Map for each row. Again, this will get folded together
when we generate the List<Mutation>.
- we don't need to create Mutations for
PhoenixRuntime.getUncommittedDataIterator() and it appears we don't need to
sort (though we should verify that). Instead, we'll just generate a
List<KeyValue> for each row in MutationState, allowing duplicate and
out-of-order row keys.
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