The default variety of lower tasks for each career. Ordinarily established to a major near the number of obtainable hosts. Ignored when mapred.
Define the encoding strategy to use although producing data. Shifting this will only have an affect on the light weight encoding for integers. This flag won't change the compression level of better degree compression codec (like ZLIB). Feasible solutions are Pace and COMPRESSION.
This flag should be set to accurate to help vectorized method in the minimize-facet GROUP BY question execution. The default value is accurate.
Same as hive.metastore.try out.immediate.sql, for read statements inside a transaction that modifies metastore knowledge. Because of non-normal conduct in Postgres, if a direct SQL select query has incorrect syntax or a little something related within a transaction, the complete transaction will fail and tumble-back again to DataNucleus will not be achievable. You ought to disable the usage of immediate SQL within transactions if that occurs within your situation.
When enabled, this selection allows a person script to exit productively without having consuming all the data from your regular input.
Time in seconds concerning checks to determine if any tables or partitions must be compacted. This could be kept large for the reason that Each and every look for compaction requires numerous calls in opposition to the NameNode.
In the entire process of Mapjoin, click here to read The real key/price is going to be held inside the hashtable. This price signifies the load factor for that in-memory hashtable.
Irrespective of whether to push a limit by means of remaining/right outer sign up for or union. If the worth is correct and the Related Site size of the outer enter is lowered adequate (as laid out in hive.
Aside from the configuration Qualities listed During this part, some Qualities in other sections are also relevant to Tez:
Whether to optimize multi team by question to create an individual M/R task system. If your multi group by question has widespread group by keys, Will probably be optimized to generate a single M/R job.
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In combination with the Hive metastore Attributes mentioned With this part, some Houses are shown in other sections:
A Java regex. Configuration Houses that match this regex may be modified by consumer when SQL standard base authorization is applied.
Regardless of whether Hive supports concurrency or not. A ZooKeeper occasion needs to be up and operating to the default Hive lock supervisor to aid read-produce locks.