zhijiangW commented on a change in pull request #11515: [FLINK-16744][task] implement channel state persistence for unaligned checkpoints URL: https://github.com/apache/flink/pull/11515#discussion_r402133516
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/channel/ChannelStateWriter.java ########## @@ -18,19 +18,51 @@ package org.apache.flink.runtime.checkpoint.channel; import org.apache.flink.annotation.Internal; +import org.apache.flink.runtime.checkpoint.CheckpointOptions; import org.apache.flink.runtime.io.network.buffer.Buffer; -import org.apache.flink.runtime.state.StateObject; +import org.apache.flink.runtime.state.InputChannelStateHandle; +import org.apache.flink.runtime.state.ResultSubpartitionStateHandle; +import java.io.Closeable; import java.util.Collection; import java.util.Collections; import java.util.concurrent.CompletableFuture; -import java.util.concurrent.Future; /** * Writes channel state during checkpoint/savepoint. */ @Internal -public interface ChannelStateWriter extends AutoCloseable { +public interface ChannelStateWriter extends Closeable { + + /** + * Channel state write result. + */ + class ChannelStateWriteResult { + final CompletableFuture<Collection<InputChannelStateHandle>> inputChannelStateHandles; + final CompletableFuture<Collection<ResultSubpartitionStateHandle>> resultSubpartitionStateHandles; + + ChannelStateWriteResult() { + this(new CompletableFuture<>(), new CompletableFuture<>()); + } + + ChannelStateWriteResult(CompletableFuture<Collection<InputChannelStateHandle>> i, CompletableFuture<Collection<ResultSubpartitionStateHandle>> r) { Review comment: nit: `i, r` give some meaningful names and split the arguments in separate line. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services