Frequently Asked Questions on using MySQL on Oracle Big Data Appliance with Hadoop Components
(Doc ID 1542128.1)
Last updated on OCTOBER 04, 2019
Applies to:Big Data Appliance Integrated Software
This document provides answers to frequently asked questions about using MySQL with Oracle Big Data Appliance and Hadoop Components.
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In this Document
|Questions and Answers|
|Is replication setup for MySQL(which manages CM and Hadoop Stack) on BDA?|
|Is enabling of transparent data encryption (TDE) on MySQL supported on the BDA?|
|Is automatic failover configured between primary MySQL and backup?|
|Is automatic purging of MySQL binary logs enabled on BDA?|
|On BDA V2.0.1 receiving a deadlock error popup when re-starting the HDFS service in Cloudera Manager(CM). How can I resolve this?|
|When trying to run Sqoop seeing exception: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure. How can I resolve this?|
|Getting exception: "not allowed to connect to this MySQL server" when trying to run Sqoop. How can I resolve this exception?|
|On multi-rack Oracle Big Data Appliance (BDA) V2.0.1 or client when trying to execute Hive commands it fails. How can I resolve this?|
|On BDA V3.0.1 does MySQL support automatic failover?|
|On BDA V4.2.0 does MySQL support automatic failover?|
|If /var/lib/mysql is filling up what are the options?|
|If needed what would be the best way to restore a backed up MySQL database?|
|In the case where the MySQL master has a failure what information is there on promoting the MySQL slave to the master?|