HBase High availability HBase automatically fails over to the standby node when

Hbase high availability hbase automatically fails

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HBase High availability HBase automatically fails over to the standby node when the active master node fails. If you are connecting to HBase through a REST or Thrift server, you must switch to a different master node when the active master node fails. 55
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Amazon EMR Management Guide Supported Applications and Features Application Availability during master node failover Notes HCatalog Availability not affected by master node failover HCatalog is built upon Hive metastore, which exists outside of the cluster. HCatalog remains available during the master node failover process. JupyterHub High availability JupyterHub is installed on all three master instances. It is highly recommended to configure notebook persistence to prevent notebook loss upon master node failure. For more information, see Configuring Persistence for Notebooks in Amazon S3 . Livy High availability Livy is installed on all three master nodes. When the active master node fails, you lose access to the current Livy session and need to create a new Livy session on a different master node or on the new replacement node. Mahout Availability not affected by master node failover Since Mahout has no daemon, it is not affected by the master node failover process. MXNet Availability not affected by master node failover Since MXNet has no daemon, it is not affected by the master node failover process. Phoenix Hight Availability Phoenix’ QueryServer runs only on one of the three master nodes. Phoenix on all three masters is configured to connect the Phoenix QueryServer. You can find the private IP of Phoenix’s Query server by using /etc/phoenix/conf/phoenix- env.sh file Pig Availability not affected by master node failover Since Pig has no daemon, it is not affected by the master node failover process. Spark High availability All Spark applications run in YARN containers and can react to master node failover in the same way as high availability YARN features. Sqoop High availability By default, sqoop-job and sqoop-metastore store data(job descriptions) on local disk of master that runs the command, if you want to save metastore data on external Database, please refer to apache Sqoop documentation Tez High availability Since Tez containers run on YARN, Tez behaves the same way as YARN during the master node failover process. TensorFlow Availability not affected by master node failover Since TensorFlow has no daemon, it is not affected by the master node failover process. 56
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Amazon EMR Management Guide Supported Applications and Features Application Availability during master node failover Notes Zeppelin High availability Zeppelin is installed on all three master nodes. Zeppelin stores notes and interpreter configurations in HDFS by default to prevent data loss. Interpreter sessions are completely isolated across all three master instances. Session data will be lost upon master failure. It is recommended to not modify the same note concurrently on different master instances.
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  • Spring '12
  • LauraParker
  • Amazon Web Services, Amazon Elastic Compute Cloud

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