Prior to this commit, the "use" command treated trailing semicolons as
significant parts of the database name. This lead to a confusing user
experience since other parts of influxql treat the trailing semicolon as
a statement separator, or appear to ignore it. A typical use case looks
something like:
> show databases;
-- snip --
> use foo;
This commit trims off trailing semicolons from database names in "use"
commands if present to match user expectations.
Fixes#2258
The multiple checks for Mapper and Executor type -- the lack of DRYness
in this code -- meant the same checks would need to be copied. Therefore
this change, as well as fixing the bug, improves the situation a little
bit by *asking* the Mappers what type of Executor is required. This code
is still not ideal.
Fixes#3355.
With this change, the query engine code gathers information about
shards and tagsets by working with individual shards, collating the
information, and returning that to the client. It does not assume that any
particular shard is local, and accesses all shards through abstracted
Mappers, of which there are two types -- a Mapper type for Raw queries
and a second type for Aggregate queries. There are corresponding
Executors for each type of Mapper, but both types of Executors share the
same interface.
When run as service, stdout goes to /dev/null by default. This means
that Run() errors are not visible in the logs, which is tough to debug.
This change will ensure that when run as a service, Run() errors appear
at stderr, which are routed to the logs by default.
This commit adds a write ahead log to the shard. Entries are cached
in memory and periodically flushed back into the index. The WAL and
the cache are both partitioned into buckets so that flushing doesn't
stop the world as long.
Statements were only being normalized if a default database was included
in the query (usually via the query param 'db'). However if no default
database was included, and none was an explicit part of the measurement
name, no database-existence check was run. This result in a later panic
with wildcard expansion.
Alexander Morozov
Philip O'Toole
Timothy Raymond
Philip O'Toole
gunnaraasen
Marcio Castilho
David Lawrence
JP
Joseph Crail
Ben Johnson
Jason Wilder
Cory LaNou
ben hockey
dgnorton
Paul Dix