cxzl25 opened a new pull request, #4474:
URL: https://github.com/apache/hive/pull/4474
### What changes were proposed in this pull request?
Add `PART_KEY_VAL` index to table `PARTITION_KEY_VALS`
### Why are the changes needed?
Improve performance
#### Current
```
[pool-4-thread-1] DEBUG metastore.MetaStoreDirectSql: Direct SQL query in
352.763678ms + 0.026622ms, the query is [select "PARTITIONS"."PART_ID" from
"PARTITIONS" inner join "TBLS" on "PARTITIONS"."TBL_ID" = "TBLS"."TBL_ID"
and "TBLS"."TBL_NAME" = ? inner join "DBS" on "TBLS"."DB_ID" = "DBS"."DB_ID"
and "DBS"."NAME" = ? inner join "PARTITION_KEY_VALS" "FILTER0" on
"FILTER0"."PART_ID" = "PARTITIONS"."PART_ID" and "FILTER0"."INTEGER_IDX" = 0
inner join "PARTITION_KEY_VALS" "FILTER1" on "FILTER1"."PART_ID" =
"PARTITIONS"."PART_ID" and "FILTER1"."INTEGER_IDX" = 1 where (
(("FILTER0"."PART_KEY_VAL" = ?) and ("FILTER1"."PART_KEY_VAL" = ?)) )]
```
#### Add index
```
[pool-4-thread-2] DEBUG metastore.MetaStoreDirectSql: Direct SQL query in
13.770586ms + 0.016063ms
```
### Does this PR introduce _any_ user-facing change?
No
### Is the change a dependency upgrade?
No
### How was this patch tested?
Validation in production environment
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