This commit converts meta.ShardInfo.OwnerIDs from a slice of ids
to a slice of objects. This is to support adding statuses for a
shard for a given node. For example, a node may have a shard
assigned to it but it is currently copying the shard and is not
ready to serve data for it.
The old `OwnerIDs` is marked as deprecated, however, the code
still supports loading from older protobuf-encoded data.
The TSDBStore was returning a nil mapper if the shard did not exist. The caller always
assumed the mapper would not be nil causing a panic. Instead, have the mapper skip the mapping
phase if it's shard reference is nil. This fixes queries against data-only nodes and against
shards that are not fully replicated in the cluster.
Fixes#3574
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.
Jason Wilder
Philip O'Toole
Cory LaNou
Ben Johnson
David Norton
Philip O'Toole
Sean Beckett