Whether or not to enhance multi group by query to make an individual M/R work strategy. If your multi team by query has popular team by keys, Will probably be optimized to make only one M/R work. (This configuration residence was taken off in release 0.9.0.)
Enable JDO question pushdown for integral partition columns in metastore. Off by default. This improves metastore effectiveness for integral columns, particularly when you can find a lot of partitions.
This flag ought to be set to genuine to restrict utilization of indigenous vector map sign up for hash tables to the MultiKey in queries utilizing MapJoin.
Irrespective of whether to press a Restrict by left/suitable outer sign up for or union. If the value is real and the scale in the outer enter is decreased ample (as specified in hive.
The DefaultHiveMetastoreAuthorizationProvider implements the conventional Hive grant/revoke model. A storage-based mostly authorization implementation is usually supplied to implement as the worth of the configuration assets:
Remove extra map-reduce Employment if the information is already clustered by exactly the same critical which must be made use of once again. This could usually be set to true. As it is a different feature, it has been produced configurable.
Established this to true if table directories should really inherit the permissions in the warehouse or databases Listing rather than staying created with permissions derived from dfs umask.
Highest quantity of bytes a script is permitted to emit to plain error (for every map-lessen activity). This helps prevent runaway scripts from filling logs partitions to ability.
When vehicle reducer parallelism is enabled this element might be used to set a decrease Restrict for the selection of reducers that Tez specifies.
Adjustment to mapjoin hashtable measurement derived from desk and column statistics; the estimate of the quantity of keys is split by this price. If the worth is 0, statistics are usually not used and hive.hashtable.initialCapacity is used instead.
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This environment demonstrates how HiveServer2 will report the desk varieties for JDBC and other customer implementations that retrieve the available tables and supported table sorts.
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A comma separated list of builtin UDFs which might be allowed to be executed. A UDF that is not A part of the listing will return an error if invoked from a question.