[ANNOUNCE] Cloudera Enterprise 5.5.6 Released

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Dear CDH and Cloudera Manager users,

We are pleased to announce the release of Cloudera Enterprise 5.5.6 (CDH 5.5.6 and Cloudera Manager 5.5.6).

This release fixes key bugs and includes the following:

    CDH fixes for the following issues:

• HADOOP-12483 - Maintain wrapped SASL ordering for postponed IPC responses
• HDFS-9290 - DFSClient#callAppend() is not backward compatible for slightly older NameNodes
• HDFS-10178 - Permanent write failures can happen if pipeline recoveries occur for the first packet
• HBASE-14241- Fix deadlock during cluster shutdown due to concurrent connection close
• HBASE-14474 - DeadLock in RpcClientImpl.Connection.close()
• HBASE-15430 - Failed taking snapshot - Manifest proto-message too large
• IMPALA-3378 - HiveUdfCall::Open() produces unsynchronized access to JniUtil::global_refs_ vector
• IMPALA-3379 - HBaseTableWriter::CreatePutList() produces unsynchronized access to JniUtil::global_refs_ vector
• IMPALA-3698 - Fix Isilon permissions test
• IMPALA-3711 - Remove unnecessary privilege checks in getDbsMetadata()
• IMPALA-3751 - Fix clang build errors and warnings
• IMPALA-4135 - Thrift threaded server times-out connections during high load
• MAPREDUCE-6635 - Unsafe long to int conversion in UncompressedSplitLineReader and IndexOutOfBoundsEx...
• MAPREDUCE-6684 - High contention on scanning of user directory under immediate_done in Job History S...
• PIG-3569 - SUM function for BigDecimal and BigInteger
• SQOOP-2387 - Sqoop should support importing from table with column names containing some special characters

For a full list of upstream JIRAs fixed in CDH 5.5.6, see the issues fixed section of the Release Notes.

    Cloudera Manager fixes for the following issues:

• Separation of authentication and authorization coprocessor configs in HBase - HBase Secure Bulkload is now enabled for all CDH 5.5 and higher clusters, regardless of whether Kerberos is enabled. Also fixed a related issue where clusters with authentication (Kerberos) but not authorization failed in HBase-related MapReduce jobs.
• HDFS Snapshot policy selects unhealthy host to run on - When selecting a role to run the HDFS Snapshot command, Cloudera Manager now selects a non-decommissioned host with active status. Also, hosts in maintenance mode have a lower priority than active hosts.

For a full list of upstream JIRAs fixed in Cloudera Manager 5.5.6, see the issues fixed section of the Release Notes.

We look forward to you trying it, using the information below:

• Download Cloudera Enterprise
• View the documentation

As always, we are happy to hear your feedback. Please send your comments and suggestions to the user group or through our community forums. You can also file bugs through our external JIRA projects on issues.cloudera.org.