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Impala Settings

AtScale supports the following settings for configuring Impala.

impala.shuffle.threshold​

  • Default: 100000.0
  • Restart: No

The row count limit for when the [SHUFFLE] hint should be disabled. Setting this too high can cause a single node to crash.

impala.shuffle.hint.enabled​

  • Default: true
  • Restart: No

Whether to enable the use of the [SHUFFLE] hint in insert statements.

impala.syncDdl.enabled​

  • Default: false
  • Restart: No

Whether to force synchronous metadata updates in Impala.

impala.atscale.udf.enabled​

  • Default: true
  • Restart: Yes

Whether to enable the use of the to_date UDF that AtScale ships.

impala.invalidateMetadata.enabled​

  • Default: true
  • Restart: No

Whether to execute INVALIDATE METADATA statements.