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v4.7.2.3 Release notes

Software version

Release Date: 20/Dec/2021

See 4.7.2.3 for download information.

Software upgrade support

Fresh installations are supported along with the following upgrade path:

  • 4.6.1.9 4.7.2.3

  • 4.6.1.8 or earlier4.6.1.94.7.2.3

Refer to Upgrading Unravel server for instructions to upgrade to Unravel 4.6.1.9 version.

Refer to Upgrading Unravel for instructions to upgrade to Unravel 4.7.2.3 version.

Refer to Installing Unravel for fresh installations.

Sensor upgrade

Certified platforms

MapR platform is tested and certified in this release for new installations and upgrade to Unravel version 4.7.2.3.

Review your platform's compatibility matrix before you install Unravel.

Updates to Unravel's configuration properties

New features

  • None

Improvements and enhancements

  • Node.js Upgrade to 14.17.6 for server. (UIX-4379)

Unsupported

  • Unravel does not support Billing on EMR and on-prem platforms.

  • On the Data page, File Reports, Small File reports, and file size information are not supported for MapR, EMR, and Databricks clusters.

  • Impala jobs are not supported on the HDP platform.

  • Monitoring the expiration of the SSL Certificates and Kerberos principals in Unravel multi-cluster deployments.

MapR

The following features are not supported for MapR:

  • Impala applications

  • Kerberos

  • The following features are supported on the Data page:

    • Forecasting

    • Small Files

    • File Reports

  • The following reports are not supported on MapR:

    • File Reports

    • Small Files Report

    • Capacity Forecasting

    • Migration Planning

    The Tuning report is supported only for MR jobs.

  • Migration Planning

  • AutoAction is not supported for Impala applications

  • Migration

  • Billing

  • Insights Overview

  • Migration Planning is not supported for the following regions for Azure Data Lake:

    • Germany Central (Sovereign)

    • Germany Northeast (Sovereign)

  • Forecasting and Migration: In a multi-cluster environment, you can configure only a single cluster at a time; hence reports are generated only for that single cluster.

  • Migration Planning is not supported for MapR.

  • Unravel does not support multi-cluster management of combined on-prem and cloud clusters.

  • Unravel does not support apps belonging to the same pipeline in a multi-cluster environment but is sourced from different clusters. A pipeline can only contain apps that belong to the same cluster.

  • Reports are not supported on Databricks and EMR.

In Jobs > Sessions, the feature of applying recommendations and then running the newly configured app is not supported.

  • Pig and Cascading applications are not supported.

Bug fixes

  • Security

    • log4j2 vulnerability fix is provided. (INSTALL-2216)

  • Upgrade

    • After an upgrade from 4.6.1.9 to 4.7.2.3 during healthcheck, the MariaDB-5.7 shows as unsupported. (INSTALL-2195)

    • After an upgrade from 4.6.1.9 to 4.7.2.3, the access to YARN fails. (INSTALL-2193)

    • After an upgrade from 4.6.1.9 to 4.7.2.3, during healthcheck, Cluster Manager services and Hadoop distribution fails. (INSTALL-2192)

    • After an upgrade from 4.6.1.9 to 4.7.2.3, new applications are not getting tagged. (INSTALL-2204)

  • Workflow

    • Tagged workflow missing resources and DAG graph data. (ASP-1304)

  • Platform

    • The unravel_mapr_setup.py script fails with an exception due to hardcoded unravel_version_path, which is specific to the old installer. (INSTALL-2218)

  • Event logs and YARN logs are not loaded for some applications in Google Dataproc clusters. (PG-170)

  • In the Spark apps details page, under the Resources tab, the label denoting attempts in resource graphs appears distorted. (PG-169)

  • Create time of partitions does not get captured in hive metastore if the partition is created dynamically. This limits Unravel to show Last Day KPIs for the partition section.

  • Wrong data displayed for Number of Partitions Created KPI/trend graph under Partitions KPIs - Last Day section in theData page. (DATAPAGE-473)

  • Exception: Problem when retrieving bootstrap actions for cluster is seen in the aws_worker daemon logs.

    Workaround: While creating AWS account for EMR Chargeback/Insights overview feature, you must include an additional entry in the Policy JSON file for "elasticmapreduce:ListBootstrapActions", as follows:

    {
        “Version”: “2012-10-17",
        “Statement”: [
            {
                “Effect”: “Allow”,
                “Action”: [
                    “pricing:GetProducts”,
                    “elasticmapreduce:ListClusters”,
                    “elasticmapreduce:DescribeCluster”,
                    “elasticmapreduce:ListInstanceFleets”,
                    “elasticmapreduce:ListInstanceGroups”,
                    “elasticmapreduce:ListBootstrapActions“,
                    “elasticmapreduce:ListInstances”,
                    “ec2:DescribeSpotPriceHistory”
                ],
                “Resource”: “*”
            }
        ]
    }

    Even though the AWS account was already created without this entry (elasticmapreduce:ListBootstrapActions), you can always include this policy later.

  • Unravel node fails to send email notifications. (INSTALL-1694)

  • The Insights Overview tab uses UTC as the timezone while other pages use local time. Hence, the date and time shown on the Insights Overview tab and the other pages after redirection can be different. (UIX-4176)

  • Kerberos can only be disabled manually from the unravel.yamlfile.

     kerberos:
          enabled: False
  • Cloud Mapping Per Host report: Failure to get instance list for certain cloud providers. (MIG-171)

    Workaround:

    1. Run dbcli.

      <Unravel installation directory>/unravel/manager run dbcli
      
    2. Make the following change in the database schema:

      ALTER TABLE celery_taskmeta CHANGE COLUMN result result MEDIUMBLOB;
  • Cluster discovery

    • If the metric retrieval for a host fails, then the CPU and memory capacity/usage graphs and heatmaps are not displayed.

      This happens on a CDH cluster when the Cloudera Manager agent of a host does not send any heartbeats to the Cloudera Manager server. Such a host is shown as Bad Health in Cloudera Manager. (REPORT-1706)

      Workaround: Ensure that the Cloudera Manager agent sends heartbeats to the Cloudera Manager on all hosts and that none of the hosts are shown as Bad Health.

    • The On-prem Cluster Identity may show an incorrect Spark version on CDH. The report may incorrectly show Spark 1 when Spark 2 is installed on the CDH cluster. (REPORT-1702)

  • When using PostgreSQL, the % sign is duplicated and displayed in the Workload Fit report > Map to single cluster tab. (MIG-42)

  • Cloud Mapping Per Host  report scheduled in v4.6.1.x will not work in v4.7.1.0. Users must schedule a new report. (REPORT-1886)

  • The TopX report email contains a link to the Unravel TopX report instead of showing the report content in the email as in the old reports.

  • Queue analysis: The log file name (unravel_us_1.log) displayed in the error message is incorrect. The correct name of the log file is unravel_sensor.log. (REPORT-1663)

  • The sensor setup script fails with unrecognized arguments. (INSTALL-1667)

  • There is a lag seen for SQL Streaming applications. (PLATFORM-2764)

  • If the customer uses an active directory for Kerberos and the samAccountName and principal do not match, this can cause errors when accessing HDFS. (DOC-755)

  • In AAD login mode when external logout happens, the user still has access to his current logged-in UI. (UI-4125)

  • For PySpark applications, the processCPUTime and the processCPULoad are not captured properly. (ASP-626)

  • SQL events generator generates SQL Like clause event if the query contains like pattern even in the literals. (TEZLLAP-349)

  • Notebooks will not work after upgrading to v4.7.1.0. You can configure them separately. (REPORT-1895)

  • In case you have configured a single cluster deployment for Unravel and the cluster name is not default, then the Datapage feature may not work properly.

    For this, you must explicitly set the following property after upgrading. (INSTALL-2151)

    <Unravel installation directory>/unravel/manager stop
    <Unravel installation directory>/unravel/manager config properties set hive.metastore.cluster.ids=<cluster-name>
    <Unravel installation directory>/unravel/manager apply
    <Unravel installation directory>/unravel/manager start
  • After you upgrade from v4.6.x to v4.7.1.0, the Tez application details page does not initially show DAG data. The DAG data is visible only after you refresh the page. (ASP-1126)

  • On the Manage page, the DB Stats are not displayed for untracked clusters. (UIX-4171)

  • The new user interface (UI) can be accessed only from Chrome.

  • In the App summary page for Impala, the Query> Operator view is visible after scrolling down. (UIX-3536).

  • Jobs getting falsely labeled as a Tez App for Oozie Sqoop and Shell actions. (PLATFORM-2403)

Support

For support issues, contact Unravel Support.