This flag ought to be established to legitimate to help vectorizing rows employing vector deserialize. The default benefit is false.
Optimum amount of open up transactions. If present open transactions reach this limit, long run open transaction requests might be turned down, till the selection goes underneath the Restrict.
When seeking a lesser subset of knowledge for easy Restrict, just how much dimensions we need to ensure Each individual row to obtain not less than.
Similar as hive.metastore.try out.direct.sql, for read through statements in a transaction that modifies metastore info. On account of non-typical behavior in Postgres, if a immediate SQL pick out query has incorrect syntax or a little something identical within a transaction, the entire transaction will are unsuccessful and slide-back again to DataNucleus will not be probable. You ought to disable the usage of immediate SQL within transactions if that takes place within your situation.
A comma divided list of hooks which apply QueryLifeTimeHook. These are going to be activated before/right after query compilation and just before/immediately after question execution, within the get specified.
Session might be shut when relationship is closed. Established this to Fake to obtain session outlive its mum or dad connection.
With hive.server2.session.Examine.interval established to a positive time benefit, session is going to be shut when it is not accessed for this period of time, which can be disabled by placing to zero or unfavorable price.
Genuine: Verify he has a good point that Variation details stored in metastore matches with a single from Hive jars. Also disable automatic schema migration attempt (see datanucleus.
Regardless of whether joins may be automatically transformed to bucket map joins in Hive when Tez is utilised as the execution engine (hive.execution.motor is ready to "tez").
The Hive/Tez optimizer estimates the information sizing flowing via each of your operators. The Be part of operator makes use of column statistics to estimate the volume of rows flowing from it and as a result the data dimensions.
A comma separated listing of hooks which put into action QueryLifeTimeHook. These will likely be brought on just before/after query compilation and prior pop over to these guys to/just after query execution, inside the get specified.
Conventional mistake authorized for NDV estimates, expressed in proportion. This supplies a tradeoff among accuracy and compute cost. A lessen worth with the mistake implies better precision and a better compute Charge. (NDV signifies variety of unique values.)
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A comma separated listing of builtin UDFs which are permitted to be executed. A UDF that's not included in the listing will return an error if invoked from a question.