Amazon s3 Flink s3读取错误：数据读取的长度与预期长度不同

使用flink 1.7.0，但也可以在flink 1.8.0上看到。在通过flink.readFile源从S3读取gzip对象时，我们经常会遇到一些随机错误：

org.apache.flink.fs.s3base.shaded.com.amazonaws.SdkClientException: Data read has a different length than the expected: dataLength=9713156; expectedLength=9770429; includeSkipped=true; in.getClass()=class org.apache.flink.fs.s3base.shaded.com.amazonaws.services.s3.AmazonS3Client$2; markedSupported=false; marked=0; resetSinceLastMarked=false; markCount=0; resetCount=0
    at org.apache.flink.fs.s3base.shaded.com.amazonaws.util.LengthCheckInputStream.checkLength(LengthCheckInputStream.java:151)
    at org.apache.flink.fs.s3base.shaded.com.amazonaws.util.LengthCheckInputStream.read(LengthCheckInputStream.java:93)
    at org.apache.flink.fs.s3base.shaded.com.amazonaws.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:76)
    at org.apache.flink.fs.shaded.hadoop3.org.apache.hadoop.fs.s3a.S3AInputStream.closeStream(S3AInputStream.java:529)
    at org.apache.flink.fs.shaded.hadoop3.org.apache.hadoop.fs.s3a.S3AInputStream.close(S3AInputStream.java:490)
    at java.io.FilterInputStream.close(FilterInputStream.java:181)
    at org.apache.flink.fs.s3.common.hadoop.HadoopDataInputStream.close(HadoopDataInputStream.java:89)
    at java.util.zip.InflaterInputStream.close(InflaterInputStream.java:227)
    at java.util.zip.GZIPInputStream.close(GZIPInputStream.java:136)
    at org.apache.flink.api.common.io.InputStreamFSInputWrapper.close(InputStreamFSInputWrapper.java:46)
    at org.apache.flink.api.common.io.FileInputFormat.close(FileInputFormat.java:861)
    at org.apache.flink.api.common.io.DelimitedInputFormat.close(DelimitedInputFormat.java:536)
    at org.apache.flink.streaming.api.functions.source.ContinuousFileReaderOperator$SplitReader.run(ContinuousFileReaderOperator.java:336)

ys 在一个给定的作业中，我们通常会看到许多/大多数作业读取成功，但几乎总是至少有一个失败（比如50个文件中有一个失败）

看起来这个错误实际上是由AWS客户机引起的，所以可能flink与此无关，但我希望有人能够洞察如何使其可靠地工作

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当错误发生时，它将终止源并取消所有连接的操作符。我对flink还是新手，但我认为这是可以从以前的快照恢复的东西？当这种异常发生时，我是否应该期望flink会重新读取该文件？

也许您可以尝试为类似s3a的应用程序添加更多连接

flink:
...
    config: |
      fs.s3a.connection.maximum: 320