Accurate: Confirm that Variation data saved in metastore matches with 1 from Hive jars. Also disable automatic schema migration attempt (see datanucleus.
Must the metastore do authorization checks in opposition to the fundamental storage for functions like fall-partition (disallow the fall-partition Should the consumer in problem does not have permissions to delete the corresponding directory within the storage).
Highest range of objects (tables/partitions) is often retrieved from metastore in one batch. The upper the range, the a lot less the quantity of spherical trips is required to the Hive metastore server, but it may also lead to higher memory necessity in the shopper side.
This configuration residence allows the consumer to supply a comma-separated list of URLs which give the type and location of Hadoop credential providers.
The most duration with the query string to shop inside the lock. The default worth is 1000000, For the reason that facts Restrict of a znode is 1MB
The utmost memory to be used for hash in RS operator for major K assortment. The default worth "-1" usually means no Restrict.
The maximum variety of index entries explanation to browse throughout a query that employs the compact index. Detrimental value is such as infinity.
By default, the cache that ORC input structure uses to keep the ORC file footer takes advantage of tough references for that cached item. Location this to accurate can help keep away from out-of-memory challenges under memory stress (in some cases) at the price of slight unpredictability in Total question overall performance.
The most details dimensions to the dimension table that generates partition pruning info. If reaches this Restrict, the optimization is going to be turned off.
This controls what number of transactions streaming agents which include Flume or Storm open at the same time. The streaming agent then writes that quantity of entries into only one file (per Flume agent or Storm bolt).
Established this to genuine if desk directories need to inherit the permissions in the warehouse or databases directory rather than remaining designed with permissions derived from dfs umask.
This flag needs to be set to real to empower vector map sign up for hash tables to employ max / max filtering for integer sign up for queries working with MapJoin.
Activate Tez' automobile reducer parallelism element. When enabled, Hive will still estimate knowledge dimensions and established do my stats assignment parallelism estimates. Tez will sample resource vertices' output dimensions and adjust the estimates at runtime as required.
When correct, retains a lock file within the scratch directory. If a Hive course of action dies and unintentionally leaves a dangling scratchdir powering, the cleardanglingscratchdir Resource will remove it.