potential bug?

crail/client/src/main/java/com/ibm/crail/core/CoreStream.java

Line 235 in 8055c50

dataBuf.position(opDesc.getBufferPosition());

A dataBuf.clear() might be required here before setting limit and position? Otherwise in my parquet reader I get

java.lang.IllegalArgumentException
	at java.nio.Buffer.position(Buffer.java:244)
	at com.ibm.crail.memory.OffHeapBuffer.position(OffHeapBuffer.java:46)
	at com.ibm.crail.core.CoreStream.prepareAndTrigger(CoreStream.java:239)
	at com.ibm.crail.core.CoreStream.dataOperation(CoreStream.java:105)
	at com.ibm.crail.core.CoreInputStream.read(CoreInputStream.java:77)
	...

Agree. Fixed.