(This configuration property was removed in release 2.0.0.). Default is no tries on failures. See Group Membership for details. Maximum number of bytes a script is allowed to emit to standard error (per map-reduce task). If Hive is running in test mode, prefixes the output table by this string. 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). ), LLAP IO memory usage; 'cache' (the default) uses data and metadata cache with a custom off-heap allocator, 'allocator' uses the custom allocator without the caches,'none' doesn't use either (this mode may result in significant performance degradation). When false, does not create a lock file and therefore the cleardanglingscratchdir tool cannot remove any dangling scratch directories. Whether to push predicates down into storage handlers. mydatabase hdfs://bivm:9000/biginsights/hive/warehouse/mydatabase.db {Lead Developer Email=jfoo@somewhere.com, Lead Developer=John Foo, Experiment Name=Correlation age/sentiment, date=2013-07-11} If not set, defaults to the codec extension for text files (e.g. Whether to include the current database in the Hive prompt. In the Table Parameters section, locate the skipAutoProvisioning property and (if it exists) verify that its value is set to "true". See Statistics in Hive for information about how to collect and use Hive table, partition, and column statistics. Deprecated name: hive.compactor.history.retention.attempted, Default value changed from 1.0 to 10.0 in, Hive 0.11.0: (empty, but includes this list implicitly), Changed in Hive 0.14.0 to include "list" and "reload" with, Added in Hive 0.7.0, added to HiveConf in Hive 2.1.0, Default Value: (empty, but includes list shown below implicitly), Default Value: (empty, treated as not set – all UDFs allowed), Default Value:  "org.apache.hadoop.hive.common.metrics.metrics2.JsonFileMetricsReporter, org.apache.hadoop.hive.common.metrics.metrics2.JmxMetricsReporter". Whether to show explain result at user level for Hive-on-Spark queries. One of DEBUG, ERROR, INFO, TRACE, WARN. For information see the design document Hive on Tez, especially the Installation and Configuration section. For a full list of sections and properties available for defining activities, see the Pipelines article. This allows for scenarios where all users don't have search permissions on LDAP, instead requiring only the bind user to have search permissions. The maximum data size for the dimension table that generates partition pruning information. A UDF that is included in the list will return an error if invoked from a query. This parameter is a global variable that enables a number of optimizations when running on blobstores.Some of the optimizations, such as Configuration Properties#hive.blobstore.use.blobstore.as.scratchdir, won't be used if this variable is set to false. If the multi group by query has common group by keys, it will be optimized to generate a single M/R job. For each connecting user, an HDFS scratch directory ${hive.exec.scratchdir}/ is created with ${Configuration Properties#hive.scratch.dir.permission}. Comma separated list of non-SQL Hive commands that users are authorized to execute. The default Columns tab shows the table's columns. The default value is true. Enforce metastore schema version consistency.True: Verify that version information stored in metastore matches with one from Hive jars. RCFile default SerDe (ColumnarSerDe) serializes the values in such a way that the datatypes can be converted from string to any type. The only downside to this. Define the ratio of base writer and delta writer in terms of STRIPE_SIZE and BUFFER_SIZE. Creates necessary schema on a startup if one does not exist. The path to the Kerberos Keytab file containing the principal to use to talk to ZooKeeper for ZooKeeper SecretManager. A post-execution hook is specified as the name of a Java class which implements the org.apache.hadoop.hive.ql.hooks.ExecuteWithHookContext interface. Annotation of the operator tree with statistics information requires partition level basic statistics like number of rows, data size and file size. If the local task's memory usage is more than this number. Allows HiveServer2 to send progress bar update information. This avoids an extra scan of the output by union. Cache objects (plans, hashtables, etc) in LLAP. (This configuration property replaced Configuration Properties#hive.files.umask.value before Hive 0.9.0 was released) (This configuration property was removed in release 3.0.0, more details in Permission Inheritance in Hive). It may be removed without further warning. This controls how many transactions streaming agents such as Flume or Storm open simultaneously. The service principal for the metastore thrift server. A negative threshold means hive.fetch.task.conversion is applied without any input length threshold. When you set Hive properties at the session level, follow these guidelines: Do not set property values in quotes. As of Hive 3.0.0 (HIVE-16363), this config can be used to specify implementations of QueryLifeTimeHookWithParseHooks. As of Hive 3.0 there are two implementations. Determines whether local tasks (typically mapjoin hashtable generation phase) run in a separate JVM (true recommended) or not. This is independently useful for union queries, and especially useful when Configuration Properties#hive.optimize.skewjoin.compiletime is set to true, since an extra union is inserted. This flag should be set to true to enable vectorizing using row deserialize. Note: The configured size will be used by 2 connection pools (TxnHandler and ObjectStore). The maximum memory to be used for hash in RS operator for top K selection. ), average row size is multiplied with the total number of rows coming out of each operator. As of Hive 0.10 this is no longer used. Apache Hive comes with an already created database with the name default. This can lead to explosion across the map-reduce boundary if the cardinality of T is very high, and map-side aggregation does not do a very good job. Pre-3.1.2 Hive implementation of Parquet stores timestamps in UTC on-file, this flag allows skipping of the conversion on reading Parquet files created from other tools that may not have done so. See HDFS Storage Types and Storage Policies. Merge small files at the end of a map-only job. Enables container prewarm for Tez (0.13.0 to 1.2.x) or Tez/Spark (1.3.0+). Enable (configurable) deprecated behaviors of arithmetic operations by setting the desired level of backward compatibility. from all parents for all the rest (second level and onward) reducer tasks. When enabled, dynamic partitioning column will be globally sorted. I tried the below commands, its not working . Live Long and Process (LLAP) functionality was added in Hive 2.0 (HIVE-7926 and associated tasks). Uses a HikariCP connection pool for JDBC metastore from 3.0 release onwards (HIVE-16383). In Hive 0.12.0 and later releases, datanucleus.autoCreateSchema is disabled if Configuration Properties#hive.metastore.schema.verification is true. If yes, it turns on sampling and prefixes the output tablename. In Hive, we have to enable buckets by using the set.hive.enforce.bucketing=true; Step 1) Creating Bucket as shown below. HIVE-16520 introduced a new CachedStore (full class name is org.apache.hadoop.hive.metastore.cache.CachedStore) that caches retrieved objects in memory on the Metastore. "org.apache.hadoop.hive.common.metrics.metrics2.CodahaleMetrics" is the new implementation. Some backing databases such as Oracle persist empty strings as nulls, and therefore will need to have this parameter set to true in order to reverse that behavior. Set to 0 for forever. Turning on Hive transactions also requires appropriate settings for Configuration Properties#hive.compactor.initiator.on, Configuration Properties#hive.compactor.worker.threads, Configuration Properties#hive.support.concurrency, Configuration Properties#hive.enforce.bucketing (Hive 0.x and 1.x only), and Configuration Properties#hive.exec.dynamic.partition.mode. ACL for token store entries. Set this to true if multiple threads access metastore through JDO concurrently. The default value is false. The main difference between this paramater and Configuration Properties#hive.optimize.skewjoin is that this parameter uses the skew information stored in the metastore to optimize the plan at compile time itself. True when HBaseStorageHandler should generate hfiles instead of operate against the online table. A false setting is only useful when running unit tests. The allowed values are: When true, HiveServer2 in HTTP transport mode will use cookie based authentication mechanism. The reason the user want to set this to true is because it can help user to avoid handling all index drop, recreation, rebuild work. When trying a smaller subset of data for simple LIMIT, maximum number of files we can sample. The ZooKeeper token store connect string. Overrides hive.service.metrics.reporter conf if present. In nonstrict mode all partitions are allowed to be dynamic. The implementation may optionally extend Hadoop's org.apache.hadoop.conf.Configured class to grab Hive's Configuration object. For example, in a filter condition like "... where key + 10 > 10 or key + 10 = 0" the expression "key + 10" will be evaluated/cached once and reused for the following expression ("key + 10 = 0"). The default connection string for the database that stores temporary Hive statistics. This enables substitution using syntax like ${var} ${system:var} and ${env:var}. However, it doesn't work correctly with integral values that are not normalized (for example, if they have leading zeroes like 0012). Comma separated list of regular expression patterns for SQL state, error code, and error message of retryable SQLExceptions, that's suitable for the Hive metastore database. A comma separated list of hooks which implement QueryLifeTimeHook. Define the compression strategy to use while writing data. This flag should be set to true to enable vectorized mode of the reduce-side GROUP BY query execution. The number of times to retry a metastore call if there were a connection error. Use "%s" where the actual username is to be plugged in. Set this to true on one instance of the Thrift metastore service as part of turning on Hive transactions. If the property is set, the value must be a valid path to an init file or directory where the init file is located. This flag should be set to true to enable use of native fast vector map join hash tables in queries using MapJoin. Lambda for ORC low-level cache LRFU cache policy. This flag should be used to provide a comma separated list of fully qualified classnames to exclude certain FileInputFormats from vectorized execution using the vectorized file inputformat. Query plan format serialization between client and task nodes. Must be a power of 2. Age of table/partition's oldest aborted transaction when compaction will be triggered. If userDNPattern and/or groupDNPattern is used in the configuration, the guidKey is not needed. If true, the evaluation result of a deterministic expression referenced twice or more will be cached. hive.added.files.path,hive.added.jars.path,hive.added.archives.path. Must be a power of 2. The default value of the property is zero, which means it will execute all the partitions at once. Time in milliseconds between runs of the cleaner thread. *, db1. This is for Hadoop 2 only. Whether or not to use a binary search to find the entries in an index table that match the filter, where possible. Whether to transform OR clauses in Filter operators into IN clauses. The total number of times you want to try to get all the locks. Whether to push a limit through left/right outer join or union. Change ), You are commenting using your Google account. List of comma-separated listeners for metastore events. More users can still be added later on. Define the encoding strategy to use while writing data. Keytab file for SPNEGO principal, optional. (This configuration property was removed in release 0.9.0.). So decreasing this value will increase the load on the NameNode. Primitive types like INT, STRING, BIGINT, etc. Standard error allowed for NDV estimates, expressed in percentage. The default value is 1 minute. In non-strict mode, for non-ACID resources, INSERT will only acquire shared lock, which allows two concurrent writes to the same partition but still lets lock manager prevent DROP TABLE etc. Whether or not to set Hadoop configs to enable auth in LLAP web app. Define the default block padding. Whether Hive should periodically update task progress counters during execution. See Archiving for File Count Reduction for general information about Hive support for Hadoop archives. 'did not initiate' will be retained in compaction history for a given table/partition. To log the EXPLAIN EXTENDED output in WebUI / Drilldown / Query Plan from Hive 3.1.0 onwards, use Configuration Properties#hive.server2.webui.explain.output. Some older Hive implementations (pre-3.1.2) wrote Avro timestamps in a UTC-normalized manner, while from version 3.1.0 until 3.1.2 Hive wrote time zone agnostic timestamps. In this recipe, you will learn how to alter table properties in Hive.The ALTER TABLE properties command alters the table properties. Storage formats that currently do not specify a SerDe include 'TextFile, RcFile'. For TDE with same encryption keys on source and target, allow Distcp super user to access the raw bytes from filesystem without decrypting on source and then encrypting on target. This flag does not affect timestamps written starting with Hive 3.1.2, which are effectively time zone agnostic (see, NOTE: This property will influence how HBase files using the AvroSerDe and timestamps in Kafka tables (in the, For more information see the design document. Used when property Configuration Properties#hive.server2.authentication is set to 'CUSTOM'. If this is set to true, mapjoin optimization in Hive/Spark will use source file sizes associated with the TableScan operator on the root of the operator tree, instead of using operator statistics. Minimum number of OR clauses needed to transform into IN clauses. From the Metastore Manager page, click Query Editors > Hive. The optimization will be disabled if number of reducers is less than specified value. Hive Metastore Administration describes additional configuration properties for the metastore. Whether to transitively replicate predicate filters over equijoin conditions. The user could potentially want to run queries over Tez without the pool of sessions. For counter type statistics, it's maxed by mapreduce.job.counters.group.name.max, which is by default 128. As of Hive 0.14.0 (HIVE-7211), a configuration name that starts with "hive." For counter type statistics, it should be bigger than the length of LB spec if exists. (This configuration property was removed in release 2.2.0.). The DefaultHiveMetastoreAuthorizationProvider implements the standard Hive grant/revoke model.