Github user sun-rui commented on the pull request:
https://github.com/apache/spark/pull/7494#issuecomment-123162043
Could you try adding a zero as done previously in writeString():
val utf8 = value.getBytes("UTF-8")
val len = utf8.length
out.writeInt(len + 1)
out.write(utf8, 0, len)
out.writeByte(0)
For those unicode strings in the test case, not sure if need to force the
encoding of them to be "UTF-8" before writing them to a JSON file. Seems not
necessary.
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