What is hive Metastore client socket timeout?

metastore. client. socket. timeout is indeed the value set in Ambari. However, the process generated by Hive Server when running a Hive job is different.

How do I increase hive Metastore client socket timeout?

1 Answer

Login to Beeline-Hive.
Update the partition level metadata in Hive Metastore: MSCK REPAIR TABLE db.
Compute the statistics for the table: ANALYZE TABLE db.
Drop the partitions of the table first using the query: ALTER TABLE db.
Increase the Hive Metastore client socket timeout.

Where are hive properties set?

Use the Set Hive parameters property to run the hive set statements and to set the hive parameters in each transaction, immediately after the transaction begins.

What is hive Gateway?

The Hive Gateway manages the incoming sensor data within your network, serving as the main logic controller that integrates all your grow room’s systems.

What execution engine does Hive support?

Chooses execution engine. Options are: mr (Map Reduce, default), tez (Tez execution, for Hadoop 2 only), or spark (Spark execution, for Hive 1.1. 0 onward). While mr remains the default engine for historical reasons, it is itself a historical engine and is deprecated in the Hive 2 line (HIVE-12300).

What is ORC split strategy?

There is a searchArg passed to the reader which can eliminate orc stripes/splits based on the filter condition provided in the query. This is used when you can allow ORC split to spend time on calculating the Splits and is used when the Query is large.

What is Hadoop Gateway?

Hadoop Gateway or edge node is a node that connects to the Hadoop cluster, but does not run any of the daemons. The purpose of an edge node is to provide an access point to the cluster and prevent users from a direct connection to critical components such as Namenode or Datanode.

What is Tez execution engine?

Tez is a new application framework built on Hadoop Yarn that can execute complex directed acyclic graphs of general data processing tasks. In many ways it can be thought of as a more flexible and powerful successor of the map-reduce framework. These tasks are the vertices in the execution graph.

Why Tez is faster than MapReduce?

Distributed processing is the base of hadoop. Hive and Pig relies on MapReduce framework for distributed processing. But MapReduce is Batch Oriented. Tez is prominent over map reduce by using hadoop containers efficiently, multiple reduce phases without map phases and effective use of HDFS.

What is ORC stripe size?

File Structure An ORC file contains groups of row data called stripes, along with auxiliary information in a file footer. At the end of the file a postscript holds compression parameters and the size of the compressed footer. The default stripe size is 250 MB.

Are Orcs Splittable?

ORC files are splittable on a stripe level. Stripe size is configurable and should depend on average length (size) of records and on how many unique values of those sorted fields you can have.

What is flume in big data?

Flume. Apache Flume. Apache Flume is an open-source, powerful, reliable and flexible system used to collect, aggregate and move large amounts of unstructured data from multiple data sources into HDFS/Hbase (for example) in a distributed fashion via it’s strong coupling with the Hadoop cluster.