sequential file stage property
Posted: Tue Nov 24, 2015 2:35 am
Read from multiple nodes
Number Of readers per node
Some days ago I just learnt we can set "Number Of readers per node" to improve the performance to read a cma file, that means there are some readers reading in the same time in one node.
And then I realize this one "Read from multiple nodes", according to the document, I think it's like the parallel run, 4 nodes read the same file the same time.
my question is, in my view, sequential file should read in sequence, if we set either the properties, then the file will process "parallelly", is this understanding correct?
And we should always set this property to read seq file, so that we can have better performance, right?
Thanks..
Walter/
Number Of readers per node
Some days ago I just learnt we can set "Number Of readers per node" to improve the performance to read a cma file, that means there are some readers reading in the same time in one node.
And then I realize this one "Read from multiple nodes", according to the document, I think it's like the parallel run, 4 nodes read the same file the same time.
my question is, in my view, sequential file should read in sequence, if we set either the properties, then the file will process "parallelly", is this understanding correct?
And we should always set this property to read seq file, so that we can have better performance, right?
Thanks..
Walter/