About rrrajesh

rrrajesh · ‎09-20-2017

@Anwaar Siddiqui It seems to be a knox bug https://issues.apache.org/jira/browse/KNOX-890 Workaround:- Append "http.header.Connection=close" in the JDBC connection string. For example, with Beeline, use the following command: beeline -u "jdbc:hive2://sandbox.hortonworks.com:8443/ ;ssl=false;sslTrustStore=/tmp/myNewTrustStore.jks;trustStorePassword=changeit;transportMode =http;httpPath=gateway/default/hive;http.header.Connection=close" -n admin -p admin-password

rrrajesh · ‎09-14-2017

@Angel Mondragon Can you see if there is any PID value on this file /var/run/mysqld/mysqld.pid Try to grep the process if there is any dead process hanging. if so try to kill it and remove the pid file. Also you can delete the socket file /var/lib/mysql/mysql.sock and /tmp/mysql.sock.lock & /tmp/mysql.sock. During the mysql restart these files will be recreated.

rrrajesh · ‎09-14-2017

@Juan Manuel Nieto Please see if this article helps for your problem. https://community.hortonworks.com/questions/61159/getting-untrusted-proxy-message-while-trying-to-se.html

rrrajesh · ‎08-30-2017

@Freemon Johnson You can also use the hdp-select status command as root in cli. It will list the services installed on the cluster. example:- ( None- means it is available in HDP.repo for install but not installed) [root@micprod ~]# hdp-select status accumulo-client - None accumulo-gc - None accumulo-master - None accumulo-monitor - None accumulo-tablet - None accumulo-tracer - None atlas-client - 2.5.3.51-3 atlas-server - 2.5.3.51-3 falcon-client - 2.5.3.51-3 falcon-server - 2.5.3.51-3 flume-server - 2.5.3.51-3 hadoop-client - 2.5.3.51-3 hadoop-hdfs-datanode - 2.5.3.51-3 hadoop-hdfs-journalnode - 2.5.3.51-3 hadoop-hdfs-namenode - 2.5.3.51-3 hadoop-hdfs-nfs3 - 2.5.3.51-3 hadoop-hdfs-portmap - 2.5.3.51-3 hadoop-hdfs-secondarynamenode - 2.5.3.51-3 hadoop-hdfs-zkfc - 2.5.3.51-3 hadoop-httpfs - None hadoop-mapreduce-historyserver - 2.5.3.51-3 hadoop-yarn-nodemanager - 2.5.3.51-3 hadoop-yarn-resourcemanager - 2.5.3.51-3 hadoop-yarn-timelineserver - 2.5.3.51-3 hbase-client - 2.5.3.51-3 hbase-master - 2.5.3.51-3 hbase-regionserver - 2.5.3.51-3 hive-metastore - 2.5.3.51-3 hive-server2 - 2.5.3.51-3 hive-server2-hive2 - 2.5.3.51-3 hive-webhcat - 2.5.3.51-3 kafka-broker - 2.5.3.51-3 knox-server - 2.5.3.51-3 livy-server - 2.5.3.51-3 mahout-client - None oozie-client - 2.5.3.51-3 oozie-server - 2.5.3.51-3 phoenix-client - 2.5.3.51-3 phoenix-server - 2.5.3.51-3 ranger-admin - 2.5.3.51-3 ranger-kms - None ranger-tagsync - None ranger-usersync - 2.5.3.51-3 slider-client - 2.5.3.51-3 spark-client - 2.5.3.51-3 spark-historyserver - 2.5.3.51-3 spark-thriftserver - 2.5.3.51-3 spark2-client - 2.5.3.51-3 spark2-historyserver - 2.5.3.51-3 spark2-thriftserver - 2.5.3.51-3 sqoop-client - 2.5.3.51-3 sqoop-server - 2.5.3.51-3 storm-client - None storm-nimbus - None storm-slider-client - 2.5.3.51-3 storm-supervisor - None zeppelin-server - 2.5.3.51-3 zookeeper-client - 2.5.3.51-3 zookeeper-server - 2.5.3.51-3

rrrajesh · ‎08-28-2017

@Jay SenSharma - Thanks

rrrajesh · ‎08-28-2017

Ambari database cleanup - Speed up ambari-server db-cleanup -d 2016-09-30 --cluster-name=TESTHDP I have ran this on a ambari database used by on one of the 500 node cluster HDP cluster. It ran for more than 15 hours but without any success. I analyzed the ambari server logs to check where it is taking most of the time, it seems to be spending more time on batch deletes on ambari.alert_notice, ambari.alert_current ,ambari.alert_history table. To improve the performance of the db cleanup, I have created the index on the ambari.alert_notice table.. -bash-4.1$ psql -U ambari -d ambari Password for user ambari: psql (8.4.20) Type "help" for help. ambari=> CREATE INDEX alert_notice_idx ON ambari.alert_notice(history_id); After this i ran re-loaded my ambari database from the backup and ran the db-cleanup, it took only less than 2 min to complete the cleanup. Also to reclaim the disk space and reindex after the cleanup, i ran the following commands as super user "postgres" Vacuum full; reindex database ambari; .

rrrajesh · ‎08-02-2017

Caution: Running bad queries against the AMS hbase tables can crash the AMS collector PID due to load. Use it for debugging purpose. To connect to AMS Hbase instance which is running in distributed mode. cd /usr/lib/ambari-metrics-collector/bin ./sqlline.py localhost:2181:/ams-hbase-secure To get the correct znode, get the value of "zookeeper.znode.parent" from AMS collector configs.

rrrajesh · ‎07-19-2017

Run the following commands postgres user(super user) : To check the db total size:- (before and after comparision) SELECT pg_size_pretty( pg_database_size('ambari')); vacuum full; reindex database ambari; SELECT pg_size_pretty( pg_database_size('ambari'));

rrrajesh · ‎03-30-2017

By default the GC logs are not enabled for Hive components. It is good to enable them to troubleshoot GC pauses on hiveserver2 instances. --------------------------------- Hiveserver2 / Metastore: --------------------------------- In Ambari navigate to the following path Services -- > Hive -- > Configs -- > Advanced --> Advanced hive-env --> hive-env template Add the following lines at the beginning, if [[ "$SERVICE" == "hiveserver2" || "$SERVICE" == "metastore" ]]; then HIVE_SERVERS_GC_LOG_OPTS="-Xloggc:{{hive_log_dir}}/gc.log-$SERVICE-`date +'%Y%m%d%H%M'` -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps" export HADOOP_OPTS="$HADOOP_OPTS $HIVE_SERVERS_GC_LOG_OPTS" fi --------------------------------- Webhact : --------------------------------- In Ambari navigate to the following path Services -- > Hive -- > Configs -- > Advanced --> Advanced webhcat-env --> webhcat-env template Add the following lines at the bottom, WEBHACAT_GC_LOG_OPTS="-Xloggc:{{templeton_log_dir}}/gc.log-webhcat-`date +'%Y%m%d%H%M'` -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps" export HADOOP_OPTS="$HADOOP_OPTS $WEBHACAT_GC_LOG_OPTS" Save the changes in ambari and restart the hive services , it will enable the GC logs writing at the restart. Thanks for the following articles. I changed the GC file name similar to namenode GC logs and kept all the GC variables in single parameter for simplicity. https://community.hortonworks.com/content/supportkb/49404/how-to-setup-gc-log-for-hiveserver2.html http://stackoverflow.com/questions/39888681/how-to-enable-gc-logging-for-apache-hiveserver2-metastore-server-webhcat-server?newreg=e73d605b7873494e810537edd040dcac

rrrajesh · ‎03-27-2017

@Sergey SoldatovThanks for the response. Do you aware if there is any apache JIRA open to include this feature in future releases.

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