Known Issues in Streaming Analytics

Learn about the known issues in Streaming Analytics clusters, the impact or changes to the functionality, and the workaround.

SQL Stream Builder

Uploading connector files fail
When trying to upload a new connector JAR with a size file more than 1 MB, the upload process fails with an error.
Set the server.tomcat.max-swallow-size in Cloudera Manager using the following steps:
  1. Open your cluster in Cloudera Manager.
  2. Select SQL Stream Builder from the list of services.
  3. Select Configuration.
  4. Search for Streaming SQL Engine Advanced Configuration Snippet (Safety Valve) for ssb-conf/ in the search bar.
  5. Add server.tomcat.max-swallow-size=2000MB to the Safety Valve.
  6. Click Save.
  7. Restart the SQL Stream Builder service.
Upgrading Streaming Analytics cluster to 7.2.15
Due to missing information in the database of SQL Stream Builder, upgrading the Streaming Analytics clusters to 7.2.15 is not possible.
CSA-3742: Catalogs are not working due to expired Kerberos TGT
When SSB is running for a longer period of time than the lifetime of the Kerberos Ticket Granting Ticket (TGT), authentication with the catalog services will fail and the catalogs stop working.
CSA-2016: Deleting table from other teams
There is a limitation when using the Streaming SQL Console for deleting tables. It is not possible to delete a table that belongs to another team using the Delete button on the User Interface.
Use DROP TABLE statement from the SQL window.
CSA-1454: Timezone settings can cause unexpected behavior in Kafka tables
You must consider the timezone settings of your environment when using timestamps in a Kafka table as it can affect the results of your query. When the timestamp in a query is identified with from_unixtime, it returns the results based on the timezone of the system. If the timezone is not set in UTC+0, the timestamp of the query results will shift in time and will not be correct.
Change your local timezone settings to UTC+0.
CSA-1231: Big numbers are incorrectly represented on the Streaming SQL Console UI
The issue impacts the following scenarios in Streaming SQL Console:
  • When having integers bigger than 253-1 among your values, the Input transformations and User Defined Functions are considered unsafe and produce incorrect results as these numbers will lose precision during parsing.
  • When having integers bigger than 253-1 among your values, sampling to the Streaming SQL Console UI produces incorrect results as these numbers will lose precision during parsing.