Hue 4.2.0-1808 (MEP 6.0.0) Release Notes

This section provides reference information, including new features, patches, known issues, and limitations for Hue 4.2.0-1808.

The notes below relate specifically to the MapR Distribution for Apache Hadoop. You can find additional information on: or the Hue homepage.

These release notes contain only MapR-specific information and are not necessarily cumulative in nature. For information about how to use the release notes, see Ecosystem Component Release Notes.

Version Hue: 4.2.0

Livy: 0.5.0

Release Date September 2018
MapR Version Interoperability See MEP Components and OS Support
Source on GitHub Hue:


GitHub Release Tag Hue: 4.2.0-mapr-1808

Livy: 0.5.0-mapr-1808

Package Names

Navigate to and select your MEP and OS to view the list of package names

New in This Release

  • Improved Drill integration, see Integrate Hue with Drill.
  • Improvements in scripts used to manage the Hue Database.
  • Hue uses /opt/mapr/ssl_truststore.pem file to verify SSL connections with other services on MapR cluster and /opt/mapr/ssl_keystore.pem as its certificate.
  • For Livy upgrades, from Livy 0.3 and above, user configuration files are saved during upgrade.
  • Starting with MEP 6.0, MapR SASL authentication, encryption, and impersonation for Livy is enabled by default on secure clusters. For more information, see Configure Livy with Security.
  • Support for integrating Hue with ADLS. For more information, see Browsing ADLS data, querying it with SQL and exporting the results back in Hue 4.2.

Known Issues and Limitations

  • MapR does not support the integration between Hue 4.2.0 and the following components:
    • Solr Search
    • ZooKeeper
  • Integration between Hue 4.2.0 and Sentry 1.7 is supported on secure clusters that use Kerberos authentication, but it is not supported on secure clusters that use MapR-SASL authentication.
  • MAPR-2561: DB Query in Hue cannot execute more than one query.
  • MAPR-28087: Livy cannot use the Hive Interpreter. To work around this issue, use the cluster mode. Set livy.spark.deployMode=cluster in the {LIVY_CONF}/livy.conf file. This issue is caused by Spark 11851: "Unable to start spark thrift server against secured hive metastore(GSS initiate failed)".
  • MHUE-141 Example maprdb tables are not downloaded on MAPR-SASL cluster.
  • MHUE-158 Error when change timezone in oozie coordinator.
  • HUE-7712 Livy-batch not available in HUE 4.1.
  • MHUE-187 R session for R Editor in Hue cannot start.
  • MHUE-192 Error, when create Impala table via Table Browser.
  • MHUE-206 ERROR "Failed to extract json message" when try to export Hive query result to ADLS.
  • MHUE-209 Hue cannot create a table from *.csv file via importer from ADLS.
Note: Hue uses python parquet lib to read parquet files. This library does not support all possible parquet formats.
  • LIVY-42: Livy UI is not accessible on Kerberos.

Resolved Issues

  • HUE-6074: [notebook] Execute snippets as Oozie batch.


This MapR release includes the following patches on the base release:

Hue Patches

GitHub Commit Number Date (YYYY-MM-DD) MapR Patch Number and Description
212fe65 2018-05-01 MHUE-103 Hue querying Drill: Support for Outbound Impersonation
896aa92 2018-05-04 MHUE-119 Error when try to move/copy large file via file browser
458a760 2018-05-08 MHUE-97 Hue-Livy secured by default
87f3d09 2018-05-16 MHUE-128 Error "Unable to authenticate" when open Job Browser page
0986577 2018-05-18 MHUE-139 Determine spark_historyserver_url from maprcli call
0c51b1d 2018-05-19 MHUE-142 Authenticate to Spark HistoryServer API with PAM credentials on secure cluster
7396e0b 2018-05-22 MHUE-140 Error while writing the path to the file in the field to load the request for hive
ba32f2a 2018-05-22 MHUE-131 Sample data is missing in database assistant
3c3e9dd 2018-05-22 MHUE-133 Error in sample pig script
47af5fb 2018-05-23 MHUE-135 Error - Could not resolve org.apache.pig.piggybank.evaluation.string.UPPER using imports
6824e44 2018-05-29 MHUE-152 Authenticate to Spark HistoryServer API with MapR-Security credentials on secure cluster
24fc2e6 2018-05-29 MHUE-153 Failed to determine active YARN HS after restart of Warden
f9155e0 2018-05-30 MD-2382 Drill Hue Integration
8e5f098 2018-05-31 MHUE-144 Errors in Hue on Kerberos cluster
8bade2e 2018-06-01 MHUE-161 Use core ssl_truststore.pem to certificate verification
7bd6b79 2018-06-01 MHUE-162 Resolving of Spark Job tracking url is broken after porting
42864e0 2018-06-01 HUE-132 Hue is trying to check certificates even if the verification is turned off
ec9db82 2018-06-04 MHUE-151 Error when starting query in oozie
1bc593a 2018-06-05 MHUE-117 Error while open maprdb table via File Browser
135bba2 2018-06-07 MHUE-157 Error when save bundle in Oozie editor
ea73663 2018-06-07 MHUE-170 Error, timer does not count execution time of the request
063b232 2018-06-08 MHUE-172 Prevent from too big size of hue.out log
bce0069 2018-06-08 MHUE-171 Add full path to ZK –°luster ID in JDBC connection url
3b5a1c2 2018-06-08 MHUE-164 Error when click on the link 'Explain' in rdbms
0d210ee 2018-06-08 MHUE-164 [drill] Implement explain method for Drill API
35b1035 2018-06-15 MHUE-175 Remove ZK Cluster ID in JDBC URL when connecting directly to DrillBit
e8b5610 2018-07-03 MHUE-126 Enabling and Disabling tables does not work for MapR Database tables
e2d7c57 2018-07-03 MHUE-113 Remove links to the functional that is not used on the mapr
e173afd 2018-07-10 MHUE-132 Hue is trying to check certificates for HBase even if the verification is turned off
3da7775 2018-07-10 MHUE-188 "Session '-1' not found." for Spark Sample Notebook in Hue
dc4c6f0 2018-07-12 MHUE-188 Prevent from starting all sessions on opening of Sample Notebook
0e1bd1a 2018-07-13 MHUE-159 Port memory issue fix from Hue 3.12 to Hue 4.2
edd5d40 2018-07-16 MHUE-186 MaprFS jar should not be part of hue package - it should be taken from /opt/mapr/lib
39e7f1d 2018-07-17 MHUE-159 Include tools/ops/ into Hue distribution
e5e68b1 2018-07-18 MHUE-159 Add execution permission for scripts in tools/ops/
b860f7c 2018-07-25 MHUE-189 Use ssl_keystore.pem from core instead of certificates extracted from ssl_keystore JKS
1cd6581 2018-07-25 MHUE-181 Turn off debug logging at Hue
4962115 2018-07-25 MHUE-200 Could not update job in sqoop2
7feb4b4 2018-07-31 MHUE-205 Exception 'WebHdfs object has no attribute _mechanism' when try to create file in ADLS
ee07d1a 2018-07-31 MHUE-204 Error in Hue integration with Drill on Kerberos
4359222 2018-08-02 MHUE-207 Correct the comment for 'drill options' in hue.ini
308de58 2018-08-02 MLIVY-51 Hue service are not started after Incremental Install
264e8be 2018-08-07 MHUE-205 Exception 'WebHdfs object has no attribute _mutual_ssl_auth' when try to create file in ADLS
5028ed6 2018-08-07 MHUE-181 Turn off debug logging at Hue in log.conf

Livy Patches

GitHub Commit Number Date (YYYY-MM-DD) MapR Patch Number and Description
4fb484e 2018-08-07 MLIVY-51 Fix misconfiguration issue in livy.conf
4f09642 2018-08-02 MLIVY-51 Livy service are not started after Incremental Install
d4c1423 2018-07-20 MZEP-109 Move DSR startup scripts out of Livy
45e074f 2018-07-18 MLIVY-37 Set hadoop.scope to provided in pom.xml
f468f04 2018-07-17 MLIVY-37 The key store and trust store password for livy should be taken from ssl-server.xml
acb639f 2018-07-16 MLIVY-50 MaprFS jar should not be part of livy package - it should be taken from /opt/mapr/lib
e450053 2018-07-10 MLIVY-49 Add to livy conf livy.repl.enable-hive-context to true if Spark is configured on Hive
a51286e 2018-07-09 [LIVY-466][RSC] Fix RSCDriver exception during RPC shutdown
f949020 2018-07-09 MLIVY-47 Errors in SparkR with Spark 2.3
0325f78 2018-07-05 MLIVY-46 Livy session is dead due to old hadoop jar in livy
b4d413f 2018-06-08

MLIVY-36 fails during the first running

e5808a0 2018-06-06 MLIVY-35 Warning with message from Spark job that jpam was added multiple times
2a151d1 2018-05-30 MLIVY-30 Need to secure all the passwords in livy.conf using Hadoop CredentialProvider
97e17c0 2018-05-29 MLIVY-33 Enable SASL for Remote Spark Client
c54b292 2018-05-23 MLIVY-27 Livy service cannot start on 6.1.0 cluster
b3d1b41 2018-05-03 MLIVY-25 security-by-default changes for
13cb262 2018-05-02

MLIVY-25 Add multiauth authentication