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Install and configure Spark History Server (SHS) on Kubernetes K8s
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Install Airflow in your local Macbook
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Google Container Registry (GCR) with Minikube or K8s
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Insert overwrite query Failed with exception Unable to move source
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last access time of a table is showing zero
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kill hive query where application id was not created
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Purging history/old data in oozie database
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Attempt to add *.jar multiple times to the distributed cache
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hive jdbc in zeppelin throwing permission error to anonymous user
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Namenode may keep crashing due to excessive logging
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ERROR : Failed with exception org.apache.hadoop.security.AccessControlException: Permission denied.
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Select does not return any row in mr execution engine but returns in tez via beeline
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knox is not getting start, failing with error Gateway SSL Certificate is Expired
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Hive metastore critical alerts with ExecutionFailed: Execution of ‘export HIVE_CONF_DIR=’/usr/hdp/cu
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Sqoop import is failing after enabling atlas with ERROR security.InMemoryJAASConfiguration: Unable t
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/usr/hdp/2.6.1.0-129/atlas/hook-bin/import-hive.sh is failing with Exception in thread “main” java.l
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Spark job run successfully in client mode but failing in cluster mode
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Unable to view OS Host information in the Ambari Dashboard(No data Available)
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Beeline java.lang.OutOfMemoryError: Requested array size exceeds VM limit
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Run all service checks in bulk
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Enable Debug mode in beeline
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hadoop cluster Benchmarking and Stress Testing
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Atlas Metadata Server error HTTP 503 response from http://localhost:21000/api/atlas/admin/status in
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extend your VirtualBox image size
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Could not create http connection to jdbc:hive2:HTTP Response code: 413 (state=08S01,code=0)
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Error: org.apache.hadoop.hbase.security.AccessDeniedException: Insufficient permissions
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Ambari is showing “Add Service Wizard in Progress” or “Move Master Wizard In Progress”
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java.lang.IllegalArgumentException: stream exceeds limit [2,048]
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How to remove header from csv during loading to hive
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Insert date into hive tables shows null during select
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Oozie server failing with error “cannot load JDBC driver class ‘com.mysql.jdbc.Driver'”
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script to kill yarn application if it is running more than x mins
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Hive2 action with Oozie in kerberos Env
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Enable GUI for Centos 6 on top of command line
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Encrypt Database and LDAP Passwords for Ambari-Server
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Cannot retrieve repository metadata (repomd.xml) for repository
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Unable to initialize Falcon Client object. Cause : Could not authenticate, Authentication failed
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Enable logging for client connections and running queries with Phoenix Query Server
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Run Pig Script in Nifi
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Exception in thread “main” org.apache.spark.SparkException: Application
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HDFS disk space vs NameNode heap size
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GC pool ‘PS MarkSweep’ had collection(s): count=6 time=26445ms
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Datanode doesn’t start with error “java.net.BindException: Address already in use”
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Top most Hadoop Interview question
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Installing grafana and it is failing with resource_management.core.exceptions.Fail: Ambari Metrics G
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Standby NameNode is faling and only one is running
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sql workbench connection to hadoop
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Hive Actions with Oozie
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Process xml file via apache pig
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Process xml file via mapreduce
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How to use Hive Query result in a variable for other query
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“INSERT OVERWRITE” functional details
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Ranger admin install fails with “007-updateBlankPolicyName.sql import failed”
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Enable ‘Job Error Log’ in oozie
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After upgrading ambari it is not coming up (hostcomponentdesiredstate.admin_state)
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Hadoop Archive Files – HAR
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Falcon MQ log files location
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Pig script with HCatLoader on Hive ORC table
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Change default permission of hive database
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Update your Capacity Scheduler through REST API
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Start Namenode manually
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Enable Debug mode for hive in Ambari
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How to integrate Ambari with ldap
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Check high CPU Intensive process on your server
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Tez job fails with ‘vertex failure’ error
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heap size issue in Hive Metastore
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Hadoop Admin most lovable commands
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Rack Awareness on Hadoop
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Namenode installation issue
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How to debug distcp jobs
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How to check contents of a JAR file
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If you delete /hdp/apps/ dir from hdfs
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Application Timeline Server (ATS) issue error code: 500, message: Internal Server Error
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Real time use cases of Hadoop
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How to change knox heap size
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Analyze your jobs running on top of Tez
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Import & Export in Hive
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Ambari shows all services down though hadoop services running
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How to enable debug logging for HDFS
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Backup and Restore of Postgres Database
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Hive Cross Cluster replication
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How to read compressed data from hdfs through hadoop command
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How do I change an existing Ambari DB Postgres to MySQL?
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Error: java.io.IOException: java.lang.RuntimeException: serious problem (state=,code=0)
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Ranger User sync does not work due to ERROR UserGroupSync [UnixUserSyncThread]
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How to enable Node Label in your cluster
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Run pig script though Oozie
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How To Set Up Master Slave Replication in MySQL
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hdfs balancer gets failed after every 30 mins when you run it through ambari
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Encrypt password used by Sqoop to import or export data from database.
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Distcp between High Availability enabled cluster
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How to fix corrupted or under replicated blocks issue
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How to disable ‘Kill Application’ button in Resource Manager web UI
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Rolling Upgrade HDP 2.2 to HDP 2.3
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Why Learn Big Data and Hadoop?
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How to start learning hadoop