[FLINK-20782][table-planner-blink] Introduce BatchPhysicalRank, and make BatchExecRank only extended from ExecNode

This closes #14506

In particularly, if task is idling forever, as there are no new records incomming
previous version would report idleTime as 0% and busyTime as 100% which is incorrect.

In this version, idleTime metric is aware that idling period has started and can take
that into account when updating it's value.

It's defined as inverted value of idleTimeMsPerSecond

This closes #14467

This closes #14563

[FLINK-20737][table-planner-blink] Introduce StreamPhysicalPythonGroupTableAggregate, and make StreamExecPythonGroupTableAggregate only extended from ExecNode

This closes #14478

[FLINK-20737][table-planner-blink] Introduce StreamPhysicalGroupTableAggregate, and make StreamExecGroupTableAggregate only extended from ExecNode

This closes #14478

[FLINK-20737][table-planner-blink] Introduce StreamPhysicalIncrementalGroupAggregate, and make StreamExecIncrementalGroupAggregate only extended from ExecNode

This closes #14478

[FLINK-20737][table-planner-blink] Introduce StreamPhysicalGlobalGroupAggregate, and make StreamExecGlobalGroupAggregate only extended from ExecNode

This closes #14478

[FLINK-20737][table-planner-blink] Introduce StreamPhysicalLocalGroupAggregate, and make StreamExecLocalGroupAggregate only extended from ExecNode

This closes #14478

[FLINK-20737][table-planner-blink] Introduce StreamPhysicalPythonGroupAggregate, and make StreamExecPythonGroupAggregate only extended from ExecNode

This closes #14478

[FLINK-20737][table-planner-blink] Introduce StreamPhysicalGroupAggregate, and make StreamExecGroupAggregate only extended from ExecNode

This closes #14478

This closes #14478

Removing the ProgrammedSlotProvider since it is no longer used.

Moved the factories of the CompletedCheckpointStore and the CheckpointIDCounter to
SchedulerUtils in order to make them reusable.

By moving the shut down of checkpoint services out of the CheckpointCoordinator,
it is now possible to reuse these services across different CheckpointCoordinators.

This closes #14553.

[hotfix][tests] Replace explicit ExecutionGraphBuilder.buildGraph calls with TestingExecutionGraphBuilder

[FLINK-20846] Factor out CompletedCheckpointStore and CheckpointIDCounter creation in ExecutionGraphBuilder.buildGraph

Apply spotless formatting

This closes #14425.

This adds a name-based field mode to the Row class. A row can
operate in 3 different modes: name-based, position-based, or
a hybrid of both when leaving the Flink runtime. It simplifies
the handling of large rows (possibly with hundreds of fields)
and will make it easier to switch between DataStream API and
Table API.

See the documentation of the Row class for more information.

This closes #14420.

This fixes the ClassNotFound problem when create a generic but not loaded function in Hive catalog

This closes #14534

In order to maintain the invariant that a failed createPartitionRequestClient won't leave
a failed connection future in the clients field, this commit removes the client future
if its creation fails.

This closes #14528.