Sarath Subramanian created ATLAS-4340:
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Summary: Set Solr wait-searcher property to false by default to
make Solr commits async
Key: ATLAS-4340
URL: https://issues.apache.org/jira/browse/ATLAS-4340
Project: Atlas
Issue Type: Improvement
Components: atlas-core
Affects Versions: 2.1.0
Reporter: Sarath Subramanian
Assignee: Sarath Subramanian
Fix For: 3.0.0, 2.2.0
In Atlas when a transaction is committed, the entries are committed to HBase
(primary storage) and Solr (indexing storage). A transaction is rolled-back if
the primary storage commit fails, on the other hand when the secondary commit
fails (solr), the transaction is not-rolled back and logged as warning and it
is recommended to use reindex to repair the missing index documents. This
behavior is due to the fact that the primary storage is the source of truth and
indexes can be rebuild.
In Janusgraph, there is a property for Solr to make solr commits async. This is
set to *true* in Atlas making every commit to wait until the solr commit is
successful. This will have a negative impact on performance and is recommended
to be false by default.
Property: *index.[X].solr.wait-searcher*
|When mutating - wait for the index to reflect new mutations before returning.
This can have a negative impact on performance.|
This Jira is about setting the default value for above property to FALSE and
can be overridden if need arises.
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