Nik Everett 18eb0827e6 Reindex: do not log when can't clear old scroll (#22942)
Versions of Elasticsearch prior to 2.0 would return a scroll id
even with the last scroll response. They'd then automatically
clear the scroll because it is empty. When terminating reindex
will attempt to clear the last scroll it received, regardless of
the remote version. This quiets the warning when the scroll cannot
be cleared for versions before 2.0.

Closes #22937
2017-02-03 10:08:27 -05:00
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