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Vineet Garg commented on HIVE-17634: ------------------------------------ Hi [~kellyzly]. I think {{hive.stats.fetch.column.stats}} & {{hive.stats.fetch.partition.stats}} are only for physical planning. Since logical planning (RelOptHiveTable::updateColStats) rely heavily on column statistics we have it always on. [~ashutoshc] [~jcamachorodriguez] can you guys confirm this? > Use properties from HiveConf about "fetchColStats" and "fetchPartStats" in > RelOptHiveTable#updateColStats > --------------------------------------------------------------------------------------------------------- > > Key: HIVE-17634 > URL: https://issues.apache.org/jira/browse/HIVE-17634 > Project: Hive > Issue Type: Bug > Reporter: liyunzhang_intel > Assignee: liyunzhang_intel > Attachments: HIVE-17634.patch > > > in > [RelOptHiveTable#updateColStats|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/RelOptHiveTable.java#L309], > we set {{fetchColStats}},{{fetchPartStats}} as true when call > {{StatsUtils.collectStatistics}} > {code} > if (!hiveTblMetadata.isPartitioned()) { > // 2.1 Handle the case for unpartitioned table. > try { > Statistics stats = StatsUtils.collectStatistics(hiveConf, null, > hiveTblMetadata, hiveNonPartitionCols, > nonPartColNamesThatRqrStats, > colStatsCached, nonPartColNamesThatRqrStats, true, true); > ... > {code} > This will cause querying columns statistic from metastore even we set > {{hive.stats.fetch.column.stats}} and {{hive.stats.fetch.partition.stats}} as > false in HiveConf. If we these two properties as false, we can not any > column statistics from metastore. Suggest to set the properties from > HiveConf. -- This message was sent by Atlassian JIRA (v6.4.14#64029)