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WhatsNew-2.0.md 2.26 KB 
name: WhatsNew-2.0
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What's new in Apache Atlas 2.0?

Features

  • Soft-reference attribute implementation.
  • Unique-attributes constraint at graph store-level
  • Atlas Index Repair tool for Janusgraph
  • Relationship notifications when new relationships are created in atlas
  • Atlas Import Transform handler implementation

Updates

  • Updated component versions to use Hadoop 3.1, Hive 3.1, HBase 2.0, Solr 7.5 and Kafka 2.0
  • Updated JanusGraph version to 0.3.1
  • Updated authentication to support trusted proxy
  • Updated patch framework to persist typedef patches applied to atlas and handle data patches.
  • Updated metrics module to collect notification metrics
  • Updated Atlas Export to support incremental export of metadata.
  • Notification Processing Improvements:
    • Notification processing to support batch-commits
    • New option in notification processing to ignore potentially incorrect hive_column_lineage
    • Updated Hive hook to avoid duplicate column-lineage entities; also updated Atlas server to skip duplicate column-lineage entities
    • Improved batch processing in notificaiton handler to avoid processing of an entity multiple times
    • Add option to ignore/prune metadata for temporary/staging hive tables
    • Avoid unnecessary lookup when creating new relationships
  • UI Improvements:
    • UI: Display counts besides the Type and Classification dropdown list in basic search
    • UI: Display lineage information for process entities
    • UI: Display entity specific icon for the lineage graph
    • UI: Add relationships table inside relationships view in entity details page.
    • UI: Add service-type dropdown in basic search to filter entitydef type.
    • Various Bug-fixes and optimizations
  • List of JIRAs resolved in Apache Atlas 2.0.0

Data Migration

With the introduction of unique-attributes constraint at graph store changes - when atlas starts up for the first time after migration to 2.0, expect some delay during startup since unique attribute constraint will be added to existing atlas metadata.