Text class constructor and setCopacity method
---------------------------------------------
Key: HADOOP-640
URL: http://issues.apache.org/jira/browse/HADOOP-640
Project: Hadoop
Issue Type: Bug
Components: mapred
Reporter: Runping Qi
A couple of problems.
1. setCapacity may cause loss of the existing data, if the new len is bigger
than the old len of the byte array.
2. Text should provide a constructor like:
Text(byte[] data, int len) {
}
Text(byte[] data, int start, int len) {
}
Text(byte[] data, int len, boolean noCopying) {
}
The last one above allows to save the cost of data copy if the user wants the
ownership of data to be transferred to Text object
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