Yun Gao created FLINK-10469:
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Summary: FileChannel may not write the whole buffer in a single
call to FileChannel.write(Buffer buffer)
Key: FLINK-10469
URL: https://issues.apache.org/jira/browse/FLINK-10469
Project: Flink
Issue Type: Bug
Components: Core
Affects Versions: 1.5.4, 1.6.1, 1.6.0, 1.5.3, 1.4.2, 1.4.1, 1.7.0, 1.6.2
Reporter: Yun Gao
Currently all the calls to _FileChannel.write(ByteBuffer src)_ assumes that
this method will not return before the whole buffer is written, like the one in
_AsynchronousFileIOChannel.write()._
However, this assumption may not be right for all the environments. We have
encountered the case that only part of a buffer was written on a cluster with a
high IO load, and the target file got messy.
To fix this issue, I think we should add a utility method in the
org.apache.flink.util.IOUtils to ensure the whole buffer is written with a
loop，and replace all the calls to _FileChannel.write(ByteBuffer)_ with this new
method.
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