Pinal Shah created ATLAS-5227:
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Summary: Support disabling composite index
Key: ATLAS-5227
URL: https://issues.apache.org/jira/browse/ATLAS-5227
Project: Atlas
Issue Type: Task
Reporter: Pinal Shah
Assignee: Pinal Shah
*Description:*
This Jira is to support disabling the active index in janusgraph.
For Example : For ddl.queryText , isIndexable=true.
*This patch handles the support to make any attribute to isIndexable=false.*
*Possible Improvement to Disable unnecessary Indexes:*
# *Write Latency* will drop significantly because JanusGraph no longer has to
create a secondary index entry for that massive string.
# *HBase Stability* will improve because we might stop hitting "Key Size
Limit" exceptions.
# *Storage Savings:* It will not create indexes
*Explanation:*
To properly remove an index, we need to follow below updated in sequence
# *DISABLE_INDEX:* Sets state to {{{}DISABLED{}}}. The index is no longer used
for queries and stops receiving updates.
# *DISCARD_INDEX:* Removes all data from the index storage. The index state
becomes {{{}DISCARDED{}}}.
# *DROP_INDEX:* Removes the index definition from the JanusGraph schema
entirely.
But performing *DISCARD_INDEX* and *DROP_INDEX actions* can be too expensive
when there is huge indexed data. Hence this patch only handles *DISABLE_INDEX*
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