If all the series in a measurement were tombstone, MeasurementHasSeries
would return true because the ok var was re-used from a prior check
earlier in the func. This caused it to be true all the time unless
the measurment was actually tombstoned.
This separates out the dropping of a measurement from the series
to avoid frequent checks to see if a measurement still has series.
The series are dropped individually and we keep track of which
measurements are involved and then delete each measurment afterwards.
Now that each shard-local index is maintaining a bitset of series ids,
tracking the series present in the local shard's tsm engine, there is no
need to track shards in the `inmem` index.
This commit removes the methods associated with tracking those
series/shard relationships.
There are two series key formats: the `models` package format, which is
also line-protocol format, and the `tsdb` package format, which is used
by the series file when serialising series keys.
When writing to a series, rather than taking a `models` format key from
the `coordinator` package and then converting it to a `tsdb` package
format, it would be cheaper to keep the key in the `models` format
before hashing it to determine which partition the key lives in.
This commit adds the ability to correctly mark a series as deleted in
the global series file. Whenever a shard engine determines that a series
should be deleted, it checks with each shard's bitset for series that
are to be deleted and are no longer contained in any shard-local
bitsets.
These series are then removed from the series file.
This commit adds a bitset into each shard's in-memory index, to be used to
track undeleted series ids. Currently tsi1 support is not implemented.
When new series are added to the shard, the series id is added
to the bitset. When series are deleted from the shard, the series
ids are removed from the bitset.
Becasue each shard shares the same inmem index reference, the bitset
is stored in the `ShardIndex`, which is local to each shard, and then
different references are passed into the shared `Index` object, depending
on which shard is writing the series.
This commit ensures that the series file should work appropriately on
32-bit architecturs. It does this by reducing the maximum size of a
series file to 512MB on 32-bit systems, which should be fully
addressable.
It further updates tests so that the series file size can be reduced
further when running many tests in parallel on 32-bit architectures.
Edd Robinson
Jason Wilder
Ben Johnson