All post related to BigData

Upgrade PostgreSQL Database

PostgreSQL is a powerful, open-source relational database management system that undergoes regular updates to enhance performance, security, and features. Upgrading your PostgreSQL database from version 10 to version 13 is…

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Rename Hive Database – Issue-resolution

After re-naming Hive database we faced one issue. This issue we faced on existing database. Issue Detail:   -bash-4.2$ hdfs dfs -ls /user/hive/warehouse/demo.db ls: Permission denied: user=demo, access=READ_EXECUTE, inode="/user/hive/warehouse/demo.db":hive:hive:drwxrwx--x We check…

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Rename Hive Database

Recently I received a requirement to rename hive database, however current Apache hive release doesn't support this feature. In this Apache Hive Jira HIVE-4847, you can see this is a…

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Apache Kafka Cluster in Cloudera

In this post I will explain how to add a separate Kafka Cluster in existing cluster.Prerequisite: 3 new hosts or EC2 instances.Install java Disable SelinuxRAM - 64 GB Java Heap - 4 GBCPU…

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Hue load balancer is down after enabling TLS

After enabling Auto-TLS on cloudera cluster, Hue load balancer is not starting. We are getting below errors: Error Message: Stderr perl -pi -e 's#{{CLOUDERA_HTTPD_LOG_DIR}}#/mounts/edge/app/log/hue-httpd#' /var/run/cloudera-scm-agent/process/1295-hue-HUE_LOAD_BALANCER/httpd.conf /var/run/cloudera-scm-agent/process/1295-hue-HUE_LOAD_BALANCER/hue.conf /var/run/cloudera-scm-agent/process/1295-hue-HUE_LOAD_BALANCER/supervisor.conf Can't open /var/run/cloudera-scm-agent/process/1295-hue-HUE_LOAD_BALANCER/supervisor.conf:…

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