When authenticating a request, check that an admin user exists instead
of checking for len(users) > 0. This prevents getting stuck with no
admin user and being unable to create one.
Casting syntax is done with the PostgreSQL syntax `field1::float` to
specify which type should be used when selecting a field. You can also
do `field1::field` or `tag1::tag` to specify that a field or tag should
be selected.
This makes it possible to select a tag when a field key and a tag key
conflict with each other in a measurement. It also means it's possible
to choose a field with a specific type if multiple shards disagree. If
no types are given, the same ordering for how a type is chosen is used
to determine which type to return.
The FieldDimensions method has been updated to return the data type for
the fields that get returned. The SeriesKeys function has also been
removed since it is no longer needed. SeriesKeys was originally used for
the fill iterator, but then expanded to be used by auxiliary iterators
for determining the channel iterator types. The fill iterator doesn't
need it anymore and the auxiliary types are better served by
FieldDimensions implementing that functionality, so SeriesKeys is no
longer needed.
Fixes#6519.
This locks showeed up in a deadlock systems running queries and
delete series across a large dataset. Queries should not need to
lock the tsdb.Store for writes
Drop database was closing and deleting each shard dir individually and
serially. It would then delete the empty database dirs.
This changes drop database to close all shards in parallel and run
one os.RemoveAll to remove everything under the db dir which is more
efficient.
This also reworked the locking to avoid locking the tsdb.Store for
long periods of time. That can cause queries and writes for other
databases to block as well.
The http connection limit is for any HTTP operation and is independent
of the other connection limits. It should be set to a higher value than
the query limit. The difference between this and the query limit is it
will close out the connection immediately without any further
processing.
This is the equivalent of the `max_connections` option in PostgreSQL.
Also removes some unused config options from the cluster config.
Fixes#6559.
On data sets with many series and potentially large series keys,
the cost of parsing the key and re-indexing can be high.
Loading the TSM keys into the index was being done repeatedly for
series that were already index by an earlier TSM file. This was
wasted worked and slows down shard loading.
Parsing the key was also innefficient and allocated a new string
slice. This was simplified to remove that allocation.
encodeTags would encode the tags by outputting every key followed by
every value in alphabetical order. decodeTags would try to read this in
an old format that printed tags in key/value order.
This fix matches decodeTags to match the same format encodeTags outputs.
Edd Robinson
joelegasse
Jonathan A. Sternberg
David Norton
Jason Wilder
Jason Wilder
Nikolay Kirsh
Ross McDonald
Ben Johnson