Cloudera Docs

Configuring manifest caching in Cloudera Manager

You can enable or disable manifest caching for Impala Coordinators and Catalogd by setting properties in Cloudera Manager.

By default, only 8 catalogs can have their manifest cache active in memory.

To connect to more than 8 HDFS clusters, in Cloudera Manager, configure iceberg.io.manifest.cache.fileio-max in catalogd_java_opts and the coordinator impalad_embedded_java_opts.

In the following task, you enable Iceberg manifest caching for the Impala Coordinator and Catalog Server.

  1. Navigate to Cloudera Manager. .
  2. Search for Iceberg.
    By default, manifest caching is enabled, but if you have turned it off, check Impala-1 (Service-Wide) to re-enable.