Jakub Dubovsky created SPARK-3121:
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Summary: Wrong implementation of implicit bytesWritableConverter
Key: SPARK-3121
URL: https://issues.apache.org/jira/browse/SPARK-3121
Project: Spark
Issue Type: Bug
Affects Versions: 1.0.2
Reporter: Jakub Dubovsky
Priority: Minor
val path = ... //path to seq file with BytesWritable as type of both key and
value
val file = sc.sequenceFile[Array[Byte],Array[Byte]](path)
file.take(1)(0)._1
This prints incorrect content of byte array. Actual content starts with correct
one and some "random" bytes and zeros are appended. BytesWritable has two
methods:
getBytes() - return content of all internal array which is often longer then
actual value stored. It usually contains the rest of previous longer values
copyBytes() - return just begining of internal array determined by internal
length property
It looks like in implicit conversion between BytesWritable and Array[byte]
getBytes is used instead of correct copyBytes.
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