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Known Limitations

Known Limitations

This section consists of known limitations we are aware of, persisting in this release.

HBase

Issue description: HBase master fails to start with Ranger-HBase plugin enabled and no Tez client on HBase master.

When the Ranger-HBase plugin is enabled, the HBase master fails to start due to a NoClassDefFoundError for org.apache.commons.lang.StringUtils.

  • The issue is identified in ODP versions 3.3.6.0-1 and 3.3.6.1-1.
  • The issue will be fixed in ODP version 3.3.6.2-1.
ERROR [master/hbase:16000:becomeActiveMaster] coprocessor.CoprocessorHost: The coprocessor org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor threw 'java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils'
at org.apache.ranger.authorization.hadoop.config.RangerConfiguration.getFileLocation(RangerConfiguration.java:76) ~[?:?]
at org.apache.ranger.authorization.hadoop.config.RangerConfiguration.addResourceIfReadable(RangerConfiguration.java:48) ~[?:?]
at org.apache.ranger.authorization.hadoop.config.RangerPluginConfig.addResourcesForServiceType(RangerPluginConfig.java:287) ~[?:?]
at org.apache.ranger.authorization.hadoop.config.RangerPluginConfig.<init>(RangerPluginConfig.java:73) ~[?:?]

Workaround:

Depending on the cluster setup, we can proceed with either of the following workarounds.

  1. If the cluster includes Tez components, ensure the Tez client is installed on the HBase Master host.
  2. Execute the following command on the HBase Master host to add the required JAR file, this resolves the HBase Master startup issue.
cp /usr/odp/3.3.6.1-1/hadoop/lib/ranger-hdfs-plugin-impl/commons-lang-2.6.jar /usr/odp/3.3.6.1-1/ranger-hbase-plugin/lib/ranger-hbase-plugin-impl/