Release Notes
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Known Issues

Summary of known issues for this release.

Table 1. Known Issues

Hortonworks Bug ID

Apache JIRA

Apache Component

Summary
N/A N/A NiFi

JDK 8u242 and newer versions cause Site-to-Site failure

When you use JDK 8u242 or a newer version, the RAW transport protocol in Site-to-Site fails with the following exception:
2018-12-19 16:19:26,811 ERROR [Site-to-Site Listener] org.apache.nifi.NiFi
 java.nio.channels.IllegalBlockingModeException: null
 at java.base/sun.nio.ch.ServerSocketAdaptor.accept(ServerSocketAdaptor.java:121)
 at org.apache.nifi.remote.SocketRemoteSiteListener$1.run(SocketRemoteSiteListener.java:125)
 at java.base/java.lang.Thread.run(Thread.java:834)
Workarounds: Choose one of the following options before upgrading to JDK 8u242 or a newer JDK version:
  • Upgrade to HDF 3.51 or a newer version. Cloudera recommends this option.
  • Change all the Remote Process Groups and Site-to-Site based reporting tasks to use HTTP transport protocol instead of RAW transport protocol.

If neither of these options work for you, contact Cloudera Support for other options.

BUG-108848

N/A Kafka

Kafka 1.1.1 producer cannot produce messages with snappy compression on IBM Power.

Table 2. Technical Service Bulletin
Technical Service Bulletin Apache JIRA Apache component Summary
TSB-497 N/A Solr CVE-2021-27905: Apache Solr SSRF vulnerability with the Replication handler

The Apache Solr ReplicationHandler (normally registered at "/replication" under a Solr core) has a "masterUrl" (also "leaderUrl" alias) parameter. The “masterUrl” parameter is used to designate another ReplicationHandler on another Solr core to replicate index data into the local core. To help prevent the CVE-2021-27905 SSRF vulnerability, Solr should check these parameters against a similar configuration used for the "shards" parameter.

For the latest update on this issue, see the corresponding Knowledge article: TSB 2021-497: CVE-2021-27905: Apache Solr SSRF vulnerability with the Replication handler