[HIVE-11964] RelOptHiveTable.hiveColStatsMap might contain mismatched column stats

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.1
• Fix Version/s: 1.3.0, 2.0.0
• Component/s: Query Planning, Statistics
• Assignee: Chaoyu Tang
• Reporter: Chaoyu Tang
• Created: 25/Sep/15 17:52
• Updated: 16/Feb/16 23:51
• Resolved: 30/Sep/15 16:29

Description

RelOptHiveTable.hiveColStatsMap might contain mismatched stats since it was built by assuming the stats returned from
==
hiveColStats =StatsUtils.getTableColumnStats(hiveTblMetadata, hiveNonPartitionCols, nonPartColNamesThatRqrStats);
or
HiveMetaStoreClient.getTableColumnStatistics(dbName, tableName, colNames)
==
have the same order of the requested columns. But actually the order is non-deterministic. therefore the returned stats should be re-ordered before it is put in hiveColStatsMap.