Apache Ambari Release Notes
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Known Issues

Ambari 2.6.1 has the following known issues, scheduled for resolution in a future release. Also, refer to the Ambari Troubleshooting Guide for additional information.

Table 1.5. Ambari 2.6.1 Known Issues

Apache Jira

HWX Jira

Problem

Solution

N/ABug-93305

Oozie Spark workflows are failing with the following exception due to missing py4j and pyspark files after patch upgrade:

Failing Oozie Launcher, Main class [org.apache.oozie.action.hadoop.SparkMain],
main() threw exception, Missing py4j and/or pyspark zip files.
Please add them to the lib folder or to the Spark sharelib.
org.apache.oozie.action.hadoop.OozieActionConfiguratorException:
 Missing py4j and/or pyspark zip files.
 Please add them to the lib folder or to the Spark sharelib.

The workaround is to manually copy these files to HDFS. To do that follow the steps below:

  1. On the Oozie server, using the HDFS client, find the new sharelib location for the patched Oozie:

    # su - oozie
    $ hdfs dfs -ls /user/oozie/share/lib
    Found 2 items
    drwxr-xr-x   - oozie hdfs          0 2017-12-14 16:45 /user/oozie/share/lib/lib_20171214164505
    drwxr-xr-x   - oozie hdfs          0 2017-12-18 18:56 /user/oozie/share/lib/lib_20171218185543
  2. As the Oozie user, upload Spark files to the new location.

    $ cd /usr/hdp/2.6.3.0-86/spark/lib
    $ hdfs dfs -put datanucleus-* /user/oozie/share/lib/lib_20171218185543/spark
    $ cd ../python/lib/
    $ hdfs dfs -put py*.zip /user/oozie/share/lib/lib_20171218185543/spark
N/ABug-93805If any hosts with master components are in maintenance mode, patch upgrade cannot proceed even if these master components are unrelated to the patch upgrade.Please take these hosts out of maintenance mode before proceeding.
N/ABug-92232When patching HDFS using Express Upgrade, HBase may stop responding because HDFS is shut down completely. You may Ignore and Proceed when the HBase Service Check is run and fails. Alternatively, you may pause the upgrade, restart HBase, then resume the upgrade.
AMBARI-22491BUG-91896When moving a Metrics Collector to a host, if a ZooKeeper server is not installed on that host, a new ZooKeeper service will be erroneously installed.No known workaround.