What is the default update durability with ElasticSearch...?
Meaning, on OS crash or power loss of one or more (or all) nodes in
a cluster, will all updates be replayed on the next start up? (Is the
transaction log sync'd after every update? That seems incredibly
Peeking at the sources it looks like there is a buffering option (add
to the log after N changes/MB have buffered up in RAM) and a
non-buffering option ... so I'm wondering what the default is.
It looks like (not sure though) Solr does not sync the transaction log
after every update (see
http://lucene.markmail.org/thread/qfpv7sq5pe4tuwq6 ) so I'm trying to
compare the two...