Release Notes

These Release Notes summarize release-specific changes:

New Features

Support For HDP 2.6 Update Which Includes LLAP Performance Improvements

HDP 2.6 clusters use newer HDP 2.6 and Ambari 2.5 releases. For more information refer to System Information.

Flex Subscriptions

Introduces support for enabling a Hortonworks Flex Support Subscription for HDCloud clusters and the cloud controller. For information on how to enable Flex Subscription in HDCloud, refer to Flex Subscriptions. If you are looking for more general information about Flex Support Subscriptions, visit the Hortonworks Support page at

Central Protected Gateway

The protected gateway (which was previously per-cluster) is now available centrally on the controller instance, providing a single-access point for all clusters and cluster resources. For more information, refer to Protected Gateway.

SSL Certificates

Introduces the ability to use your own SSL certificate in place of the self-signed certificate installed by default on the protected gateway. For more information, refer to Using Your Own SSL Certificate.

Encryption for Master, Worker, and Compute Node EBS Volumes

When creating a cluster, you can optionally select to have the cloud controller configure encryption for the EBS volumes attached to the master, worker, and compute nodes. If you choose to use this option, the following types of data are encrypted:

To learn more about EBS encryption, refer to AWS documentation. For instructions, refer to updated Creating a Cluster documentation.

Known Issues


If the issue that you are experiencing is not listed below, check the Troubleshooting documentation.


Problem (BUG-81014): Cluster Template May Not Populate Some Parameters Correctly

When creating a cluster from a previously saved template, storage-related parameters may not be pre-populated correctly.

Workaround: Before creating a cluster, validate that the storage-related parameters were populated correctly. Alternatively, you can copy the CLI JSON output, paste it into a JSON file, and create clusters using HDC CLI.

Problem (BUG-77857): Clock on the Cluster Details Page Shows 0:00

In some circumstances, the clock on the cluster details page may show 0:00 as the running time, even if more time has elapsed.

Workaround: Navigate back to the cluster dashboard. This will refresh the clock.

Problem (BUG-82018): Cluster Notification Email Field Doesn't Accept a Dash

On the Confirm Create Cluster pop-up, the email field under (Optional) Send notification when cluster is complete does not accept email addresses which include a dash. For example will not be accepted.

Workaround: This issue will be fixed in a future release. Meanwhile, use an email address which does not include a dash.

Problem (BUG-73946): Cluster History Doesn't Show HDP Version for Some Clusters

The History page may not show HDP Version for some clusters.


Problem (BUG-67740): CLI Option 'generate-cli-shared-skeleton' Doesn't Work

The hdc create-cluster generate-cli-shared-skeleton doesn't work.

Workaround: Ignore this option. Use generate-cli-skeleton instead.

Problem (BUG-69444): Connection Error After Password Reset

After reseting your password, you will get the following error when running hdc configure to update the password in the CLI configuration file:

Error while connecting to as user:, please check your username and password. (406 Not Acceptable)


  1. Edit the CLI configuration file directly with sudo. For example:
    sudo vi /home/cloudbreak/.hdc/config
  2. Change the owner of the .hdc directory manually. For example: sudo chown -R cloudbreak:cloudbreak /home/cloudbreak/.hdc/
  3. After performing these steps, hdc configure and other CLI command will start working.

Hive 2 LLAP

Problem (BUG-90246): alter table...update statistics query failure due to JDODataStoreException

When you run alter table...update statistics query and certain conditions are met (the table includes boolean columns, bitvectors are on, metastore is postgres), you may get the following error:

ERROR [HiveServer2-Background-Pool: Thread-199] metastore.RetryingHMSHandler: Retrying HMSHandler after 2000 ms (attempt 1 of 10) with error: javax.jdo.JDODataStoreException: Insert of object "org.apache.hadoop.hive.metastore.model.MTableColumnStatistics@10ac18ff" using statement "INSERT INTO "TAB_COL_STATS" ("CS_ID","AVG_COL_LEN","BIT_VECTOR","COLUMN_NAME","COLUMN_TYPE","DB_NAME","BIG_DECIMAL_HIGH_VALUE","BIG_DECIMAL_LOW_VALUE","DOUBLE_HIGH_VALUE","DOUBLE_LOW_VALUE","LAST_ANALYZED","LONG_HIGH_VALUE","LONG_LOW_VALUE","MAX_COL_LEN","NUM_DISTINCTS","NUM_FALSES","NUM_NULLS","NUM_TRUES","TBL_ID","TABLE_NAME") VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)" failed : ERROR: column "BIT_VECTOR" is of type bytea but expression is of type oid
  Hint: You will need to rewrite or cast the expression.
  Position: 346
    at org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(

Behavioral Changes

JIRA Description
BUG-80709 When creating a cluster, the "Cluster Components" gateway access is checked by default.
BUG-81255 The protected gateway (which was previously per-cluster) is now available centrally on the controller instance. For more information, refer to [Protected Gateway](

Fixed Issues

JIRA Description
BUG-77211 Fixed the cluster cloning issues where some parameters, such as Cluster Type and parameters related to autoscaling, were not be pre-populated correctly.
BUG-76991 Fixed issues with Ambari Hive View 2.0.
BUG-78871 Updated image for HDP 2.6 (Cloud). See System Information for more information.

Dependent Components

HDP 2.6 clusters are built using HDP 2.6 and Ambari 2.5. Refer to:

HDP 2.5 clusters are built using HDP 2.5 and Ambari 2.4. Refer to: