it's no longer reponsible for updating the count cache.
This commit also helps SetBit/ClearBit performance by allowing them
to work against data from `bitmapCache` instead of loading bitmaps
from fragment.storage every time.
heap sort order backwards
WIP TopN accuracy
adjusted first phase topn to collect all slices id's
incorrect handling of large topns
cache performance enhancement
fix for failed test TestMain_FrameRestore
remove unused code and fix some variable names
- Ingore asserts in fragment container.
- Only log queries that take longer than 90 seconds.
TODO:
- address the TODOs that make the asserts configurable.
This changes the API of the types but does not alter the functionality
since only the `context.Background()` is currently being used. Adding
`Context` will help handle fault tolerance in the future by allowing
timeouts to be propagated across calls to different nodes.
A `StatsClient` for `expvar` is added so we can track Stats through
the `/debug/vars` endpoint. Tags are nested inside maps so that we
can see stats for db, frame & slice.
Also added a `MultiStatsClient` for chaining multiple `StatsClient`
implementations together (e.g. `expvar` and DataDog).
Introduces new `pilosactl sort` to sort import files by bit
position so they can be inserted faster. Also optimizes container
scanning and adds a `-buffer-size` flag to `import`.
This commit makes several changes to optimize the TopN() query:
- Reduce highbits() back from 24-bits to 16-bits.
- Reduce MaxArraySize back from 2^20 to 4096.
- Optimize bitmap count invalidation.
- Parallelize TopN() across nodes.
- Parallelize TopN() across slices.
CSV exports can now be done with the pilosactl application:
$ pilosactl -d mydb -f myframe -o MYFILE.csv
If `-o` is not specified then the CSV is written to STDOUT. The
exporter combines all slices for the db/frame to into a single
concatenated CSV file.
This commit adds `roaring.Bitmap.CountRange()` to return the number
of bits in a subrange of a bitmap. This significantly improves
server start time and is needed for upcoming zero copy bitmap
optimizations.
This commit moves the cache flush to the `Index` and only serializes
a single fragment at a time.
Also included in this commit is the `inspect` command for the
`pilsoactl` binary. This provides insight into pilosa data files.
This commit refactors the block checksumming by removing the
iteration over each block and instead only checking blocks which
have data. This requires merging the cache inspection with the
roaring iterator to reduce CPU time and memory allocations.
This commit adds a `Closing` channel to the `IndexSyncer` and the
`FragmentSyncer` that is periodically checked during execution.
If the channel is closed then an in-progress sync is immediately
stopped.
