A number utilized to percentage sampling. By modifying this selection, person will change the subsets of data sampled.
Whether to help TCP keepalive for that metastore server. Keepalive will avoid accumulation of 50 %-open connections.
Irrespective of whether to eliminate the union and force the operators concerning union as well as filesink above union. This avoids an extra scan from the output by union.
The maximum number of bytes that a question utilizing the compact index can examine. Adverse worth is akin to infinity.
When enabled, this option lets a user script to exit properly with no consuming all the info in the typical enter.
This flag should be established to genuine to empower utilization of indigenous rapid vector map be a part of hash tables in queries making use of MapJoin.
If turned on, splits produced by ORC will include things like metadata regarding the stripes within the file. This info is go through remotely (from your customer or HiveServer2 device) and despatched to every one of the responsibilities.
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By default Tez will spawn containers of the dimensions of a mapper. This can be used to overwrite the default.
Apart from the configuration properties mentioned In this particular part, some Qualities in other sections also are linked to Spark:
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When car reducer parallelism is enabled this component will probably be used to above-partition knowledge in shuffle edges.
Name of your identifier factory to implement when building table/column names and many others. 'datanucleus' is used for backward compatibility.
Whether or not Hive really should instantly send out development details to TaskTracker when making use of UDTF's to stop the undertaking getting killed because of inactivity. Buyers need to be careful due to the fact this will likely avert TaskTracker from killing duties with infinite loops.