[Format] Permit dictionary replacements in IPC protocol

[asfimport]

We permit dictionaries to grow using the isDelta property in the IPC protocol. I think it should be allowed for the same dictionary ID to appear in an IPC protocol stream but with isDelta=false. This would indicate that the dictionary in that message is to replace any prior-observed ones in subsequent record batches.

For example, we might have dictionary batches in a stream:

id: 0 isDelta: false values: [a, b, c]
id: 0 isDelta: true values [d]
id 0 isDelta: false values [c, a, b]

Such data could easily be produced by a stream producer that is creating dictionaries in different execution threads.

Reporter: Wes McKinney / @wesm

Related issues:

• [Integration] Ensure dictionary IPC implementations match spec clarifications (is duplicated by)

_{Note: This issue was originally created as ARROW-5767. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
I think this may be resolved now? @emkornfield

[asfimport]

Micah Kornfield / @emkornfield:
yes, I think this duplicate ARROW-7283

[asfimport]

Todd Farmer / @toddfarmer:
Transitioning issue from Resolved to Closed to based on resolution field value.