The current code would compare every string literal it crossed and tried
to coerce them to time literals if the _looked_ like date/time strings.
The only time the TimeLiteral was used is when comparing to the the
'time' value in a where clause. This change moves the string parsing
code until we attempt to compare 'time' to a string, at which point we
know we need/want a TimeLiteral, and not just an ordinary string.
Fixes#6727
The level planner would keep including the same TSM files to be
recompacted even if they were already quite compacted and split
across several TSM files.
Fixes#6683
The default retention policy name is changed to "autogen" instead of
"default" since it ends up being ambiguous when we tell a user to check
the default retention policy, it is uncertain if we are referring to the
default retention policy (which can be changed) or the retention policy
with the name "default".
Now the automatically generated retention policy name is "autogen".
The default retention policy is now also configurable through the
configuration file so an administrator can customize what they think
should be the default.
Fixes#3733.
A query's String method is called multiple times per query. This commit
ensures all calls to query.String share use of a strings.NewReplacer.
This approximately halves the number of allocations for the benchmarked
query.
If you use a statement like this:
SELECT value FROM one..cpu, two..cpu
It will access both the `one` and `two` databases as if you had selected
the `cpu` measurement twice for both of them. Updated the `tsdb.Shard`
create iterator function to filter out any sources that do not apply to
that shard so this duplication doesn't happen.
Fixes#6701.
Use the latest documentation by default if the server version can't be
found. If it can be found, update the documentation link to that
specific version so it always points at the exact documentation relevant
for the server version.
Fixes#5906.
The limit optimization was put into the wrong place and caused only part
of the shard to be read when a limit was used. The optimization is
possible, but requires a bit of refactoring to the code here so the call
iterator is created per series before handed to the limit iterator.
Fixes#6661.
Due to an bug in TSM tombstone files, it was possible to create
empty tombstone files. At startup, the TSM file would error out
and not load the TSM file.
Instead, treat it as an empty v1 file so the TSM file can load
correctly.
Fixes#6641
The HTTPS configuration for the httpd service only had an option to
specify the certificate file and the same file would be used for both
the certificate and private key file (they could be concatenated
together).
This adds an additional option to specify the files differently from
each other while still allowing the previous behavior. If only
`https-certificate` is specified, the httpd service will try to load the
private key from the `https-certificate` file. If a separate
`https-private-key` file is specified, the private key will be loaded
from there instead.
Fixes#1310.
The parser can be passed a map of keys to literal values to be replaced
into the query. Parameters are preceded by a dollar sign (`$`). If a
parameter key is missing, an error is thrown by the parser.
Fixes#2926.
If there were duplicate points in multiple blocks, we would correctly
dedup the points and mark the regions of the blocks we've read.
Unfortunately, we were not excluding the already points as the cursor
moved to points in the later blocks which could cause points to be
return twice incorrectly.
Fixes#6611
The list of field keys in the index may have differed from the field
keys in the actual shard. Fixing `SHOW FIELD KEYS` so it relies only on
the shard rather than the index.
Fixes#6659.
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.
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.
Jonathan A. Sternberg
Rubycut
David Norton
Edd Robinson
Jason Wilder
Joe LeGasse
Alex Russell-Saw
Jason Wilder
Nathaniel Cook