The maximum memory in bytes the cached objects can use. Memory utilized is calculated dependant on estimated dimension of tables and partitions from the cache. Setting it to the damaging worth disables memory estimation.
Allow for JDO question pushdown for integral partition columns in metastore. Off by default. This improves metastore overall performance for integral columns, especially if you can find numerous partitions.
Enables HiveServer2 to send progress bar update data. This really is now available only if the execution engine is tez.
This flag should be set to real to permit Hive to reap the benefits of enter formats that assist vectorization. The default worth is true.
For TDE with same encryption keys on resource and focus on, permit Distcp Tremendous user to entry the Uncooked bytes from filesystem devoid of decrypting on supply and after that encrypting on concentrate on.
This flag needs to be established to legitimate to permit usage of indigenous speedy vector map be part of hash tables in queries applying MapJoin.
String made use of like a prefix when vehicle creating column alias. By default the prefix label will likely be appended by using a column posture amount to variety the column alias. Car technology would check out here transpire if an aggregate operate is Utilized in a pick clause devoid of an express alias.
Some choose queries is usually transformed to a single FETCH job, minimizing latency. At the moment the query must be solitary sourced not having any subquery and should not have any aggregations or distincts (which incur RS – ReduceSinkOperator, requiring a MapReduce undertaking), lateral views and joins.
The privileges mechanically granted to some end users whenever a desk receives designed. An case in point like "userX,userY:pick;userZ:create" will grant decide on privilege to userX and userY, and grant produce privilege to userZ When a brand new desk developed.
Ascertain the volume of map task at most Employed in the abide by up map be a part of occupation for the skew be a part of by specifying the minimum break up measurement. It ought to be used along with hive.skewjoin.mapjoin.map.jobs to complete a fine grained control.
No matter if to insert into multilevel nested directories like "insert Listing '/HIVEFT25686/chinna/' from table".
Standard mistake permitted for NDV estimates, expressed in share. This supplies a tradeoff involving accuracy and compute cost. A lower benefit for that error indicates bigger precision and the next compute Charge. (NDV try this site signifies amount of unique values.)
Turn on Tez' car reducer parallelism characteristic. When enabled, Hive will still estimate facts dimensions and set parallelism estimates. Tez will sample supply vertices' output measurements and adjust the estimates at runtime as required.
A COMMA-separated listing of team names that the people need to belong to (at the least one of many teams) for authentication to triumph. See Group Membership for details.