The utmost memory in bytes which the cached objects can use. Memory utilised is calculated depending on believed dimension of tables and partitions while in the cache. Environment it into a destructive worth disables memory estimation.
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When hive.optimize.limittranspose is real, this variable specifies the minimum reduction while in the amount of tuples from the outer input with the be a part of or input of your union the optimizer should get to be able to use the rule.
No matter if Hive should really periodically update undertaking development counters throughout execution. Enabling this allows endeavor development to be monitored a lot more carefully in The task tracker, but could impose a general performance penalty.
This house is Utilized in LDAP research queries when discovering LDAP team names that a selected person belongs to. The value with the LDAP attribute, indicated by this assets, needs to be an entire DN to the person or the short username or userid.
If enabled dictionary check will materialize soon after 1st row index stride (default 10000 rows) else dictionary Check out will happen prior to producing to start with stripe. In both conditions, the decision to work with dictionary or not will probably be retained thereafter.
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To shield the cluster, this controls what number of partitions may be scanned for each partitioned table. The default price "-1" suggests no Restrict. The Restrict on partitions would not influence metadata-only queries.
Specifies a completely qualified domain consumer to make use of when binding to LDAP for authentication, in lieu of using the consumer by itself. This permits for situations where by all consumers do not have look for permissions on LDAP, as an alternative demanding only the bind person to get research permissions.
Get rid of added map-lower Work opportunities if the information is previously clustered by a similar critical which really should be applied all over again. This could generally be set to accurate. As it is a find out completely new element, it has been produced configurable.
Worker threads spawn MapReduce Careers to do compactions. They don't do the compactions them selves. Growing the volume of worker threads will decrease some time it takes tables or partitions to become compacted as soon as They're determined to want compaction.
Scratch Room for Hive Work opportunities. This Listing is employed by Hive to store the strategies for various map/reduce stages with the query along with next page to saved the intermediate outputs of these phases.
This flag should be set to true to limit use of native vector map join hash tables towards the MultiKey in queries utilizing MapJoin.