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Examine if a query system contains a cross item. If there is 1, output a warning into the session's console.

When configuring the max connection pool dimensions, it is recommended to take into consideration the quantity of metastore cases and the quantity of HiveServer2 circumstances

Part of total memory to be used by map-aspect team aggregation hash table, when this team by is accompanied by map join.

In unsecure manner, true will induce the metastore to execute DFS functions using the consumer's reported user and team permissions.

Session might be closed when relationship is closed. Established this to Bogus to own session outlive its guardian connection.

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Highest number of bytes a script is permitted to emit to standard error (per map-decrease job). This helps prevent runaway scripts from filling logs partitions to potential.

Minimum amount allocation doable from have a peek at this site LLAP buddy allocator. Allocations underneath which have been padded to least allocation. For ORC, should really commonly be the same as the envisioned compression buffer dimensions, or future cheapest electricity of 2. Must be an influence of 2.

Whether view website the Variation of Hadoop that's running supports sub-directories for tables/partitions. A lot of Hive optimizations can be utilized Should the Hadoop version supports sub-directories for tables/partitions. This assist was additional by MAPREDUCE-1501.

Whether to rewrite count distinct into two phases, i.e., the initial stage takes advantage of numerous reducers Using the depend distinct key and the next phase works by using an individual reducer with no crucial.

No matter whether to help TCP keepalive for the metastore server. Keepalive will stop accumulation of 50 %-open connections.

Figure out the volume of map activity Employed in the adhere to up map be part of work for a skew be a part of. It ought to be utilized along with hive.skewjoin.mapjoin.min.break up to carry out a high-quality grained Management.

This flag ought to be set to genuine to limit usage of indigenous vector map be part of hash pop over to this site tables to the MultiKey in queries employing MapJoin.