Looks like we need to split out the tests of core classes to core
and index-lifecycle ones stay in index-lifecycle.
I believe I got everything, although I may have missed at least one thing
checked status with
$ ./gradlew :x-pack-elasticsearch:plugin:index-lifecycle:check -Dtests.seed=39838421912001B4
$ ./gradlew :x-pack-elasticsearch:plugin:core:check -Dtests.seed=39838421912001B4
other things done in this PR:
- removal of a few unused variables/thrown exceptions/imports
- fix TimeseriesLifecycleTypeTests
- an all null AllocateAction was created
- fix AllocateActionTests
- woops. -Dtests.seed=39838421912001B4 resulted in two `null`s and an emptyMap.
this resulted in a test failure.
Specifically this change makes it optional to:
* Specify `includes`, `excludes` and `requires`maps in the allocate action as long as at least one fo the options is specified and is not an empty map
* Specify an `after` parameter on a phase. If no `after` value is specified `TimeValue.ZERO` is used and the phase will be moved to as soon as the previous phase reports `ACTIONS COMPLETED`. `after` is always non-null when we are serialising the Phase.
* Specify a `type` for a LifecyclePolicy. If no `type` is specified `TimeSeriesLifecycleType.INSTANCE` is used since this is currently the only production `type`. `type` is always non-null when we are serialising the LifecyclePolicy.
This commit enables the run task for ccr by specifying that the ccr
project not be evaluated until after core is evaluated. This is
important since ccr is alphabetically before core and thus Gradle
evaluates it first.
Relates #3665
This PR adds a new setting called `index.lifecycle.date` that
the ShrinkAction will be responsible for populating in the newly created index.
This way, we can continue to know when we should be executing the next phase
relative to the original index creation date, and not that of the shrunken index.
A node can stop being the master node whilst it is running, e.g. if it can’t access `minimumMasterNodes` number of master eligible nodes. Because of this we need logic in `IndexLifecycleService` that cancels the scheduled job if the node is no longer master and re-adds the job if the node becomes master again.
This does the following in sequential service polls
1. sets the index to read-only and runs shrink with a modified `index.lifecycle.name` setting set to `null`.
2. checks to see if shrink is complete, if it is...
b. set target index's `index.lifecycle.*` settings to the original index's values.
3. if not complete, just wait till next iteration
4. if operating on shrunken index, delete old index and add it as an alias to shrunken index
* Adds Allocate lifcycle action
* Addresses review comments
Still need to make a change in core for the FilterAllocationDecider to make the execute logic simpler
* Addresses more review comments
* Adds randomMap method to AllocateActionTests
* Addresses further review comments
The checkpoints in the assertion message that the follower checkpoint is
less than the leader checkpoint are backwards. This commit fixes this
message.
* Improves handling of exceptions in Index Lifecycle
This change improves a few different aspects:
* If an exception occurs executing the lifecycle of one index it is caught, logged and other indexes are still processed
* If the lifecycle policy specified in the settings does not exist an error is logged
* Fixes the exception when the delete action is run which occurs because Phase attempts to update the phase and action settings for the deleted index. A `LifecycleAction.indexSurvives()` method is introduced which defaults to `true` but can be overridden to indicate whether the index survives following completion of the action.
* Adds test
* Fix InternalIndexLifecycleContext to update state in memory
The internal and the mock index-lifecycle-context implementations differed
in that the InternalIndexLifecycleContext assumed no one would be using it after
it mutated state. This is not the case. We assume that the current context is updated after
a `#setAction` is called so that the listener can then appropriately use the newly modified
cluster state. since idxMeta was not being updated, any call to `context.getAction` was stale and
either returning null or the previous action, not the next action that was updated by `#setAction`.
Same goes for `setPhase`.
This PR should fix this so that the Mock and Internal implementations are more in line.
The shard follow task executor determines the range of translog operations
between the leader shard's global checkpoint and the last know processed
seqno by the current shard follow task that are missing.
Then the chunks coordinator can then chunk this range up in smaller ranges
if the requested range is above the configured max chunk size. If it is
smaller than the entire range then the chunk coordinator has just one
chuck to coordinate.
Each chunk is added to a queue and is processed by the ChunkProcessor,
that reads the translog ops from the leader shard and then indexes
these translog ops into the follow shard. After that a new chuck is polled
from the queue and the ChunkProcessor performs the same actions until
there are no more chunks in the queue to process. After that the shard
follow task executor will determine a new range of translog operations
to process.
This change changes the chunk coordinator to start polling from the chunk
queue with multiple threads at the same time to handle dealing with a higher
indexing load on the leader side better.
`IndexLifecycleInitialisationIT.testMasterFailover()` intermittently failed because the timeout of 10 seconds to check if the index had been deleted was not long enough sometimes with the poll interval set to 3 seconds. This change sets the poll interval to 1 seconds for the test so that the lifecycle is more responsive. This also means the default value for the poll interval can be safely changed without affecting the test.
This change moves the Action classes and referenced data model classes to the new :x-pack-elasticsearch:plugin:core project in preparation for splitting the x-pack features into their own gradle modules.
Note that the TransportAction classes had to be promoted to their own class file (rather than being inner classes to their Action) so they can remain in the plugin project (and will late be move to the `index-lifecycle` project when its created.
