Time in milliseconds that HiveServer2 will hold out, before responding to asynchronous calls that use long polling.
Optimum number of objects (tables/partitions) is usually retrieved from metastore in a single batch. The upper the variety, the a lot less the number of spherical outings is needed to the Hive metastore server, but it may cause bigger memory necessity for the shopper side.
This flag need to be set to genuine to limit usage of indigenous vector map sign up for hash tables to your MultiKey in queries utilizing MapJoin.
When accurate, retains a lock file within the scratch Listing. If a Hive procedure dies and unintentionally leaves a dangling scratchdir guiding, the cleardanglingscratchdir Instrument will clear away it.
In unsecure method, true will bring about the metastore to execute DFS functions utilizing the client's claimed consumer and team permissions.
To estimate the scale of knowledge flowing through operators in Hive/Tez (for reducer estimation and so on.), regular row sizing is multiplied with the total quantity of rows coming out of every operator.
Whether or not Hive need to instantly send development details to TaskTracker when using UDTF's to prevent the job obtaining killed on account of inactivity. End users must be careful simply because this may avoid TaskTracker from killing tasks with infinite loops.
To protect the cluster, this controls what number of partitions could be scanned for every partitioned table. The default price "-one" indicates no limit. The Restrict on partitions doesn't have an effect on metadata-only queries.
Thrift does not assistance nulls in maps, so any nulls present in maps retrieved from object-relational mapping (ORM) should be possibly pruned review or converted to empty strings.
This assets is Utilized in LDAP research queries for finding LDAP team names a consumer belongs to. The value of this residence is utilized to construct LDAP group research have a peek at these guys query and is also made use of to indicate what a gaggle's objectClass is. Each individual LDAP team has certain objectClass. Such as: team, groupOfNames, groupOfUniqueNames and many others.
Regardless of whether a MapJoin hashtable need to deserialize values on demand from customers. Determined by the amount of values in the table the be part of will actually touch, it could possibly preserve loads of memory by not producing objects for rows that are not wanted. If all rows are needed, certainly there is no acquire.
A comma separated listing of builtin UDFs that aren't allowed to be executed. A UDF that is A part of the listing will return an error if invoked from a query.
Percentage of overall memory for use by map-facet group aggregation hash table, when this team by is accompanied by map be part of.
Whether or not Hive supports concurrency or not. A ZooKeeper instance should be up and working to the default Hive lock manager to assist read through-produce locks.