Writes could timeout and when adding new measurement names to the
index if the sort took a long time. The names slice was never
actually used (except a test) so keeping it in index wastes memory
and sort it wastes CPU and increases lock contention. The sorting
was happening while the shard held a write-lock.
Fixes#3869
The interaction of continuous query service, the meta-store loading
and initializing raft state, and syncing node info could cause a
deadlock in some instances. There was an extra read-lock taken by isLeader()
when it already had a read-lock. Removing this extra lock fixes the startup
deadlock.
Fixes#3607
This commit changes the default block size from 64KB to 4KB for
bz1. This was lowered because small blocks were being uncompressed,
merged, recompressed, and inserted for a large portion of updates.
This became slower and slower over time until it reached the 64KB
threshold. We moved to the 4KB threshold in order to lower the
impact of this recompression.
This commit changes the bz1 append to check for a small
ending block first. If the block is below the threshold
for block size then it is rewritten with the new data
points instead of having a new block written.
If the hinted handoff segment is corrupt, the size read could be
invalid and attempting to create a slice using that size causes
a panic. Ideally, we'd have a checksum on the seqment record but
for now just return an error when the size is larger than the
segment file.
Fixes#3687
This commit changes FieldCodec to always be non-nil. Normally it should
always be non-nil, however, if metadata is not persisted correctly or
consistently then it could be missing. A nil FieldCodec causes queries
to panic.
Fixes#3535
Philip O'Toole
Jason Wilder
Philip O'Toole
Sean Beckett
Ben Johnson
Cory LaNou
Paul Dix
Jon Seymour
Daniel Morsing