- Renames EnoughShardsWaitStep to ShrunkShardsAllocatedStep
- Changes ShrunkShardsAllocatedStep to check the shards of the shrunken index rather than the current one
- shrink index prefix is now passed into the steps of the shrink aciton
- Related Test Changes
Adds some missing tests including checking the hashcode and equals methods of `DeleteStep`, `StepKey`, and `TerminalPolicyStep` as well as adding a test for `DeleteAction.toSteps()`
- added ShrinkStep/Tests
- AsyncActionStep now passes in IndexMetaData instead of Index
- Delete usage of ClusterStateActionStep
- with ClusterStateActionStep gone, InitializePolicyContextStep
is the only other ClusterState-nonWait step
- Migrate setting-updates to UpdateSettingsStep
Also renames EnoughShardsWaitStep to ReplicasAllocatedStep, removes it from the allocate action and adds a check that th number of replicas in the cluster state is correct to it.
Various classes had some code that was not used and is not going to be needed so this change cleans up those classes so we don’t have dead code hanging around
The force-merge is an a TODO state due to the
unresolved issue around best_compression.
- updated ReadOnlyStep with tests
- implemented an update to the ForceMergeAction
- added UpdateBestCompressionSettingsStep
- added tests for SegmentCountStep
keep track of shard follow stats inside shard follow stats' node task instead of persistent task status.
By maintaining the shard follow stats inside its node task the stats update is quicker as
no cluster state update is required. The stats are now transient; meaning if the task
is going to run a different node then the stats are gone too. Currently only the processed
global checkpoint is being tracked and this is being restored when a shard follow node task
starts via the indices stats api (the reason of the first change of this change). Other stats
that we may add in the future (like fetch_time, see: https://gist.github.com/s1monw/dba13daf8493bf48431b72365e110717)
it is ok if we start from zero in case a shard follow task moves to another node.
This limit is based on the number of estimate bytes in each translog
operation that fall between the minimum and maximum request sequence number.
If this limit is met then the shard follow task executor will make sure
that a subsequent shard changes request will be performed to fetch the
remaining translog operations.
This limit is needed in order to protect against returning too many
translog operations in a single shard changes response.
Relates to #2436
