If ORC reader encounters corrupt knowledge, this benefit will likely be used to ascertain whether or not to skip the corrupt knowledge or throw an exception. The default actions should be to toss an exception.
Number of entries added on the GROUP BY aggregation hash right before a recomputation of typical entry size is performed.
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In Hive 0.thirteen.0 and later, if hive.stats.trustworthy is fake and statistics couldn't be computed effectively, the Procedure can continue to do well and update the statistics but it surely sets a partition property "areStatsAccurate" to Fake. If the appliance desires precise statistics, they can then be attained during the history.
This flag need to be set to correct to empower vectorizing rows utilizing vector deserialize. The default worth is false.
To estimate the scale of knowledge flowing through operators in Hive/Tez (for reducer estimation and many others.), normal row measurement is multiplied with the full range of rows popping out of each operator.
Whether Hive need to quickly send progress details to TaskTracker when working with UDTF's to prevent the task having killed thanks to inactivity. End users really should be careful mainly because this could prevent TaskTracker from killing tasks with infinite loops.
Greatest variety of bytes a script is permitted to emit to straightforward mistake (for every map-decrease task). This helps prevent runaway scripts from filling logs partitions to ability.
The most knowledge size for the dimension desk that generates partition pruning facts. If reaches this limit, the optimization will probably be turned off.
If the Edition of Hadoop which happens to be managing supports sub-directories for tables/partitions. A lot of Hive optimizations is usually applied Should the Hadoop Variation supports sub-directories for tables/partitions. This support was added by MAPREDUCE-1501.
A comma separated list of hooks which put into practice QueryLifeTimeHook. These will probably be activated prior to/soon after question compilation and prior to/right after question execution, within the order specified.
If enabled dictionary Test will materialize following very first row index stride (default 10000 rows) else dictionary Examine will take place ahead of composing 1st stripe. In Click This Link equally instances, the choice to employ dictionary or not are going to be retained thereafter.
A consumer-specified custom made LDAP query that can be utilized to grant/deny an authentication request. In case the person is part of the query's end result established, authentication succeeds. See Personalized Question String for specifics.
Regardless of whether to insert into multilevel nested directories like "insert Listing '/HIVEFT25686/chinna/' from desk".