@HareshAmin Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future.   ... View more

Hi,   The Reducer process the output of the mapper. After processing the data, it produces a new set of output. At last HDFS stores this output data. Reducer takes a set of an intermediate key value pair produced by the mapper as the input and runs a Reducer function on each of them. The mappers and reducers depends on the data that is processing.   You can manually set the number of reducers with below property but i think it is not recommended. set mapred.reduce.tasks=xx;   Regards, Chethan YM ... View more

2021-11-02 09:27:36,555 WARN org.apache.hive.common.util.RetryUtilities$ExponentiallyDecayingBatchWork: [HiveServer2-Background-Pool: Thread-180]: Exception thrown while processing using a batch size 15 org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Expecting a partition with name extract_date=2018-02-15, but metastore is returning a partition with name extract_date=2018-02-15 .) at org.apache.hadoop.hive.ql.metadata.Hive.createPartitions(Hive.java:2201) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.exec.DDLTask$1.execute(DDLTask.java:2020) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.exec.DDLTask$1.execute(DDLTask.java:1999) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hive.common.util.RetryUtilities$ExponentiallyDecayingBatchWork.run(RetryUtilities.java:93) [hive-common-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.exec.DDLTask.createPartitionsInBatches(DDLTask.java:2027) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.exec.DDLTask.msck(DDLTask.java:1918) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:413) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:199) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:97) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2200) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1843) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1563) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1339) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1334) [hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:256) [hive-service-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hive.service.cli.operation.SQLOperation.access$600(SQLOperation.java:92) [hive-service-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork$1.run(SQLOperation.java:345) [hive-service-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_231] at javax.security.auth.Subject.doAs(Subject.java:422) [?:1.8.0_231] at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1875) [hadoop-common-3.0.0-cdh6.2.1.jar:?] at org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork.run(SQLOperation.java:357) [hive-service-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_231] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_231] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_231] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_231] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_231] Caused by: org.apache.hadoop.hive.metastore.api.MetaException: Expecting a partition with name extract_date=2018-02-15, but metastore is returning a partition with name extract_date=2018-02-15 . at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$add_partitions_req_result$add_partitions_req_resultStandardScheme.read(ThriftHiveMetastore.java:64399) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$add_partitions_req_result$add_partitions_req_resultStandardScheme.read(ThriftHiveMetastore.java:64358) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$add_partitions_req_result.read(ThriftHiveMetastore.java:64281) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:86) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_add_partitions_req(ThriftHiveMetastore.java:1819) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1] at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.add_partitions_req(ThriftHiveMetastore.java:1806) ~[hive-exec-2.1.1-cdh6.2.1.jar:2.1.1-cdh6.2.1]   ... View more

Hi @ChethanYM,   1)Unfortunately I  haven't keep the full log from the query. 2)Exactly, this is my issue. 3)From impala shell. 3)If QUERY_TIMEOUT_S it is then it has the default value.   Regards , Teo   ... View more

@ighack Did you resolved your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future.  ... View more

Hi,   As per my previous comment can you destroy it and restart the LLAP and see if this works. Note: llap0 is the default application that will be running if LLAP is installed it will be recreated even if you destroy it and restart the service.    #yarn app -destroy llap0   Regards, Chethan YM   ... View more

Hi @harnu ,   Could you add these below values to /etc/security/limits.conf file and see if this helpfull? If you already have these values try to increase it and rerun the query.   hive soft nofile 65000 hive hard nofile 65000   hive soft proc 80000 hive hard proc 80000   Update limits.conf with above settings and restart hiveserver2 service while stopping all the services on that node. Please su - hive and then ulimit -a to check whether the parameters are updated for no of open files and max user process.   Regards, Chethan YM   Was your question answered? Make sure to mark the answer as the accepted solution. If you find a reply useful, say thanks by clicking on the thumbs up button.     ... View more

@pauljoshiva, Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future.  ... View more