OpenSearch/core
Simon Willnauer c499427166 Use _refresh instead of reading from Translog in the RT GET case (#20102)
Today we do a lot of accounting inside the engine to maintain locations
of documents inside the transaction log. This is only needed to ensure
we can return the documents source from the engine if it hasn't been refreshed.
Aside of the added complexity to be able to read from the currently writing translog,
maintainance of pointers into the translog this also caused inconsistencies like different values
of the `_ttl` field if it was read from the tlog or not. TermVectors are totally different if
the document is fetched from the tranlog since copy fields are ignored etc.

This chance will simply call `refresh` if the documents latest version is not in the index. This
streamlines the semantics of the `_get` API and allows for more optimizations inside the engine
and on the transaction log. Note: `_refresh` is only called iff the requested document is not refreshed
yet but has recently been updated or added.

#Relates to #19787
2016-08-24 15:30:08 +02:00
..
src Use _refresh instead of reading from Translog in the RT GET case (#20102) 2016-08-24 15:30:08 +02:00
build.gradle Update to Jackson 2.8.1 2016-08-05 12:26:06 +02:00