This is an incremental upgrade to the Scala security release 2.11.12.

This closes #5136

Double.MIN_VALUE != min(double)

This closes #5126

com.datastax.driver.core.NettyUtil expects netty to be present either at its
original package or relocated to com.datastax.shaded.netty. By relocating it
to this package we make sure the driver follows its designated path.

This closes #5183.

This closes #5148.

Since Java 8 Metaspace has replaced PermGen

This closes #5158.

This closes #4612.

This closes #5135.

This closes #5130.

This closes #5131.

This closes #5160.

This closes #5164.

This closes #5166

[FLINK-7928] [runtime] extend the resources in ResourceProfile for precisely calculating the resource of task manager

Summary:
ResourceProfile denotes the resource requirements of a task. It should contains:
1. The resource for the operators: the resources in ResourceSpec (please refer to jira-7878)
2. The resource for the task to communicate with its upstreams.
3. The resource for the task to communicate with its downstreams.
Now the ResourceProfile only contains the first part. Adding the last two parts.

Test Plan: UnitTests

Reviewers: haitao.w

Differential Revision: https://aone.alibaba-inc.com/code/D330364

This closes #4991.

Summary:
Now, flink only support user define CPU and MEM,
but some user need to specify the GPU, FPGA and so on resources.
So it need to make the resouce type extendible in the ResourceSpec.
Add a extend field for new resources.

Test Plan: UnitTest

Reviewers: haitao.w

Differential Revision: https://aone.alibaba-inc.com/code/D327427

make Resource abstract and add GPUResource FPGAResource

This closes #4911.

Add a resource spec builder and remove FPGAResource

This commit adds support for queued scheduling with slot sharing to the
SlotPool. The idea of slot sharing is that multiple tasks can run in the
same slot. Moreover, queued scheduling means that a slot request must not
be completed right away but at a later point in time. This allows to
start new TaskExecutors in case that there are no more slots left.

The main component responsible for the management of shared slots is the
SlotSharingManager. The SlotSharingManager maintains internally a tree-like
structure which stores the SlotContext future of the underlying
AllocatedSlot. Whenever this future is completed potentially pending
LogicalSlot instantiations are executed and sent to the slot requester.

A shared slot is represented by a MultiTaskSlot which can harbour multiple
TaskSlots. A TaskSlot can either be a MultiTaskSlot or a SingleTaskSlot.

In order to represent co-location constraints, we first obtain a root
MultiTaskSlot and then allocate a nested MultiTaskSlot in which the
co-located tasks are allocated. The corresponding SlotRequestID is assigned
to the CoLocationConstraint in order to make the TaskSlot retrievable for
other tasks assigned to the same CoLocationConstraint.

Port SchedulerSlotSharingTest, SchedulerIsolatedTasksTest and
ScheduleWithCoLocationHintTest to run with SlotPool.

Restructure SlotPool components.

Add SlotSharingManagerTest, SlotPoolSlotSharingTest and
SlotPoolCoLocationTest.

This closes #5091.

Not only check for a slot request with the right allocation id but also check
whether we can fulfill other pending slot requests with an unclaimed offered
slot before adding it to the list of available slots.

This closes #5090.

Before logical slots like the SimpleSlot and SharedSlot where associated to the
actually allocated slot via the AllocationID. This, however, was sub-optimal because
allocated slots can be re-used to fulfill also other slot requests (logical slots).
Therefore, we should bind the logical slots to the right id with the right lifecycle
which is the slot request id.

This closes #5089.

This commit introduces the SlotContext which is an abstraction for the SimpleSlot
to obtain the relevant slot information to do the communication with the
TaskManager without relying on the AllocatedSlot which is now only used by the
SlotPool.

This closes #5088.

The cluster entrypoints start the ResourceManager with the web interface URL.
This URL is used to set the correct tracking URL in Yarn when registering the
Yarn application.

This closes #5128.

[FLINK-8262] [tests] Harden IndividualRestartsConcurrencyTest.testLocalFailureFailsPendingCheckpoints

The problem was a concurrent restart attempt which failed due to not enough
available slots. This failure would lead to the job failure and the discarding
of all pending checkpoints.

Remove isCanceled, isReleased method and decouple logical slot from Execution by
introducing a Payload interface which is set for a LogicalSlot. The Payload interface
is implemented by the Execution and allows to fail an implementation and obtaining
a termination future.

Introduce proper Execution#releaseFuture which is completed once the Execution's
assigned resource has been released.

This closes #5087.

The LogicalSlot interface decouples the task deployment from the actual
slot implementation which at the moment is Slot, SimpleSlot and SharedSlot.
This is a helpful step to introduce a different slot implementation for
Flip-6.

This closes #5086.

This closes #4988.

The WebMonitorEndpoint is the common rest endpoint used for serving
the web frontend REST calls. It will be used by the Dispatcher and
the JobMaster to fuel the web frontend.

This closes #4987.

Implement SubmittedJobGraphListener interface in Dispatcher

Call start() on SubmittedJobGraphStore with Dispatcher as listener. To enable
this, the dispatcher must implement the SubmittedJobGraphListener interface. Add
simple unit tests for the new methods. Refactor DispatcherTest to remove
redundancy.

[FLINK-8176][flip6] Make InMemorySubmittedJobGraphStore thread-safe

[FLINK-8176][flip6] Add method isStarted() to TestingLeaderElectionService

[FLINK-8176][flip6] Return same RunningJobsRegistry instance from TestingHighAvailabilityServices

[FLINK-8176][flip6] Fix race conditions in Dispatcher and DispatcherTest

Check if jobManagerRunner exists before submitting job.
Replace JobManagerRunner mock used in tests with real instance.
Do not run job graph recovery in actor main thread when job graph is recovered
from SubmittedJobGraphListener#onAddedJobGraph(JobID).

[FLINK-8176][flip6] Rename variables in DispatcherTest

[FLINK-8176][flip6] Remove injectMocks in DispatcherTest

[FLINK-8176][flip6] Update Dispatcher's SubmittedJobGraphListener callbacks

Always attempt the job submission if onAddedJobGraph or onRemovedJobGraph are
called. The checks in submitJob and removeJob are sufficient.

This closes #5107.

This closes #5129.

This closes #5157.

This closes #5153.