Piotr Nowojski created FLINK-12536:
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Summary: Make BufferOrEventSequence#getNext() non-blocking
Key: FLINK-12536
URL: https://issues.apache.org/jira/browse/FLINK-12536
Project: Flink
Issue Type: Sub-task
Components: Runtime / Network
Affects Versions: 1.9.0
Reporter: Piotr Nowojski
Currently it is non-blocking in case of credit-based flow control (default),
however for \{{SpilledBufferOrEventSequence}} it is blocking on reading from
file. We might want to consider reimplementing it to be non blocking with
{{CompletableFuture<?> isAvailable()}} method.
Otherwise we will block mailbox processing for the duration of reading from
file - for example we will block processing time timers and potentially in the
future network flushes.
This is not a high priority change, since it affects non-default configuration
option AND at the moment only processing time timers are planned to be moved to
the mailbox for 1.9.
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