About preview features

Imply Long Term Support (LTS) releases and Short Term Support (STS) releases include preview features that are at one of two possible lifecycle stages:

• Alpha: An alpha feature may include major bugs or performance issues. It may also be otherwise feature-limited. Alpha features are not ready for production use, but are instead suitable for feature previews and learning environments.

  Alpha features may be subject to significant changes or removal without prior notice.

• Beta: Beta features should be suitable for production scenarios. However, you should only enable a beta feature after testing in a staging environment. When you feel comfortable to move to production, enable beta features in closely monitored scenarios.

Preview features for Imply's distribution of Apache Druid

For instructions on enabling preview features in Imply's distribution of Apache Druid®, refer to the documentation for each individual feature.

Alpha features:

• Apache Kafka extraction namespace
• Auto-compaction using compaction supervisors
• Centralized datasource schemas
• Concurrent append and replace
• Guardrail for subquery results using druid.server.http.maxSubqueryRows
• Confluent schema registry ingestion support
• Imply View Manager
• Indexed tables
• Indexer process
• Projections
• Rollup during automatic compaction
• Row and column security
• Segment locking

Beta features:

• Changing segment granularity in automatic compaction - finer to coarser only
• Dynamic auto scaling for Kinesis
• Dynamic config provider
• Enhanced IP support, including IPv6
• Enhanced query planning for correlated subqueries
• Expression aggregator
• Kerberos extension
• Microsoft Azure extension
• MSQ task engine exports
• Replacing existing segments using tombstones
• Segment-level caching on the broker
• Sort-merge join and hash shuffle join for SQL-based ingestion
• SQL-compatible null handling
• SQL query canceling
• Time series functions

Pivot preview features

Preview features can be individually enabled or disabled in the Pivot UI. See Feature flags for more information.

Preview features in Pivot:

• Bar chart visualization (beta)
• Batch dashboard updates (alpha)
• Download data using an improved engine (beta)
• Error notifications (alpha)
• Event annotations (alpha)
• Explain (alpha)
• Multi-axis line chart (beta)
• Overall (explore) visualization (beta)
• Records table (explore) visualization (beta)
• Unmet alert evaluations (alpha)