Improvement in Catalog Observability

This release brings significant enhancements to the Impala Catalog Web UI, addressing performance issues related to delays in processing Hive Metastore (HMS) events, which can lead to queries using outdated metadata

These improvements specifically target slow Data Definition Language (DDL) and Data Manipulation Language (DML) operations such as INSERT, LOAD DATA statements, and REFRESH operations. Additionally, it addresses operations stuck in various stages such as startup, among other scenarios. Prior to this release, troubleshooting these issues required analyzing logs, but now the process has been streamlined by enhancing the observability of the catalog across multiple dimensions, including the catalogd WebUI, DDL/DML profiling, and additional log reports on sluggish operations.

Key enhancements include:

  • Catalogd WebUI: Utilize the catalogd WebUI to monitor catalog operations.
  • DDL/DML Profiling: Monitor DDL/DML profile for detailed execution insights within catalogd.
  • Log Reports: Analyze logs for a comprehensive review of slow operations, offering valuable insights into the root causes of performance issues.

These improvements empower users with a more user-friendly and effective means of diagnosing and resolving catalog-related performance challenges.