Sigar can only be disabled by removing the binaries. This is tricky for our
tests and might cause a lot of trouble if a user wants or needs to do it.
This commit allows to disable sigar with a simple boolean flag in the settings.
Closes#9582
FieldMapper is currently generic, where the templated type
is only used as the return of a single function, value(Object).
This change simply removes this generic type. It is not needed. The
implementations of value() now has a covariant return (so
those methods have not changed).
If we close the shard before the engine is started we see a NPE in
the logs which is not problematic since the relevant parts are in a
finally block. Yet, the NPE is unnecessary and can be confusing.
Today, only the NettyTransportChannel implements the getProfileName method
and the other channel implementations do not. The profile name is useful for some
plugins to perform custom actions based on the name. Rather than checking the
type of the channel, it makes sense to always expose the profile name.
For DirectResponseChannels we use a name that cannot be used in the settings
to define another profile with that name. For LocalTransportChannel we use the
same name as the default profile.
Closes#10483
When mapping updates happen concurrently with document parsing, bad things can
happen. For instance, when applying a mapping update we first update the Mapping
object which is used for parsing and then FieldNameAnalyzer which is used by
IndexWriter for analysis. So if you are unlucky, it could happen that a document
was parsed successfully without introducing dynamic updates yet IndexWriter does
not see its analyzer yet.
In order to fix this issue, mapping updates are now protected by a write lock
and document parsing is protected by the read lock associated with this write
lock. This ensures that no documents will be parsed while a mapping update is
being applied, so document parsing will either see none of the update or all of
it.
Shay Banon
Adrien Grand
javanna
Simon Willnauer
Robert Muir
Ryan Ernst
Igor Motov
jaymode
Colin Goodheart-Smithe