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https://issues.apache.org/jira/browse/FLINK-8178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16292519#comment-16292519
 ] 

ASF GitHub Bot commented on FLINK-8178:
---------------------------------------

Github user pnowojski commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5105#discussion_r156931262
  
    --- Diff: 
flink-runtime/src/test/java/org/apache/flink/runtime/io/network/api/writer/RecordOrEventCollectingResultPartitionWriter.java
 ---
    @@ -0,0 +1,104 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.flink.runtime.io.network.api.writer;
    +
    +import org.apache.flink.api.common.typeutils.TypeSerializer;
    +import org.apache.flink.runtime.event.AbstractEvent;
    +import 
org.apache.flink.runtime.io.network.api.serialization.AdaptiveSpanningRecordDeserializer;
    +import 
org.apache.flink.runtime.io.network.api.serialization.EventSerializer;
    +import 
org.apache.flink.runtime.io.network.api.serialization.RecordDeserializer;
    +import org.apache.flink.runtime.io.network.buffer.Buffer;
    +import org.apache.flink.runtime.io.network.buffer.BufferProvider;
    +import org.apache.flink.runtime.io.network.partition.ResultPartitionID;
    +import org.apache.flink.runtime.plugable.DeserializationDelegate;
    +import org.apache.flink.runtime.plugable.NonReusingDeserializationDelegate;
    +
    +import java.io.IOException;
    +import java.util.Collection;
    +
    +import static org.apache.flink.util.Preconditions.checkNotNull;
    +import static org.apache.flink.util.Preconditions.checkState;
    +
    +/**
    + * {@link ResultPartitionWriter} that collects records or events on the 
List.
    --- End diff --
    
    it's a specific user supplied list (`the` vs `a`), and "on" seems to me 
better as well:
    
http://learnersdictionary.com/qa/is-it-correct-to-say-on-the-list-or-in-the-list
    https://www.englishforums.com/English/OnTheListOrInTheList/wzblc/post.htm
    



> Introduce not threadsafe write only BufferBuilder
> -------------------------------------------------
>
>                 Key: FLINK-8178
>                 URL: https://issues.apache.org/jira/browse/FLINK-8178
>             Project: Flink
>          Issue Type: Improvement
>          Components: Network
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>             Fix For: 1.5.0
>
>
> While Buffer class is used in multithreaded context it requires 
> synchronisation. Now it is miss-leading/unclear and suggesting that 
> RecordSerializer should take into account synchronisation of the Buffer 
> that's holding. With NotThreadSafe BufferBuilder there would be clear 
> separation between single-threaded writing/creating a BufferBuilder and 
> multithreaded Buffer handling/retaining/recycling.



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