When created by the SSTableScanner the dataStart passed in is the existing file position so it may not be necessary. But it may be sane to do it and the seek() call may not result in disk reads.
Cheers ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 12/04/2013, at 1:48 AM, dong.yajun <dongt...@gmail.com> wrote: > Hello, > > I read the source code of SSTableIdentityIterator with v-1.0.9, and I thought > the following code is not necessary, did I miss anything? > > RandomAccessReader file = (RandomAccessReader) input; > file.seek(this.dataStart); > > here, the value of dataStart is assigned in SSTableScanner: > > long dataStart = file.getFilePointer(); > > any suggestion abort this issue? thanks. > > Best, > > -- > Rick Dong >
