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reinstate optimization that got unintentionally broken in 366461ccdb (#5418) 

DESCRIPTION: Reinstate optimisation for uniform shard interval ranges

During a refactor introduced in #4132 the following change was made, which made the optimisation in `CalculateUniformHashRangeIndex` unreachable: 
366461ccdb (diff-565a339ed3c78bc5a0d4ffeb4e91032150b1dffbeeff59cd3e65981d20b998c7L319-R319)

This PR reinstates the path to the optimisation!
pull/5399/head
Nils Dijk 2021-11-05 13:07:51 +01:00 committed by GitHub
parent 763176a4d9
commit 0e7cf9f0ca
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src/backend/distributed/utils/shardinterval_utils.c
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@ -297,7 +297,7 @@ FindShardIntervalIndex(Datum searchedValue, CitusTableCacheEntry *cacheEntry)
ShardInterval **shardIntervalCache = cacheEntry->sortedShardIntervalArray;
int shardCount = cacheEntry->shardIntervalArrayLength;
FmgrInfo *compareFunction = cacheEntry->shardIntervalCompareFunction;
bool useBinarySearch = (IsCitusTableTypeCacheEntry(cacheEntry, HASH_DISTRIBUTED) ||
bool useBinarySearch = (!IsCitusTableTypeCacheEntry(cacheEntry, HASH_DISTRIBUTED) ||
!cacheEntry->hasUniformHashDistribution);
int shardIndex = INVALID_SHARD_INDEX;