Be mindful that if you are using a scanner with filters, RowKey remains the index of the table, and that filter just filters your results based on how you run your scanner, similarly to "cat file | grep filter", where if "file" is your table and has many lines (rows), your scan might be very inefficient. (e.g. reading too many rows)
-Jack On Sat, Jul 16, 2011 at 9:51 AM, Arun Sanjay J <[email protected]> wrote: > Yes. It works fine. Thx for your response. I was just skeptical about > whether it would work. The javadoc of FilterList as well confirms the same, > " Since you can use Filter Lists as children of Filter Lists, you can create > a hierarchy of filters to be evaluated.". > > Sanjay > > On Fri, Jul 15, 2011 at 3:54 PM, Stack <[email protected]> wrote: > >> It looks like it should work. Have you tried it? >> St.Ack >> >> On Fri, Jul 15, 2011 at 11:45 AM, Arun Sanjay J <[email protected]> >> wrote: >> > Hi >> > I have just started to use HBase and I am not familiar so much. I want to >> > perform a filtering condition as below, >> > >> > if A and ( B or C or D or.......) where A ,B,C,D will be filters. >> > >> > Kindly let me know if I can use the FilterList for the above case as >> below, >> > >> > FilterList list1 = new FilterList(Operator.MUST_PASS_ALL); >> > FilterList list2 = new FilterList(Operator.MUST_PASS_ONE); >> > >> > list2.addFilter(B); >> > list2.addFilter(C); >> > list2.addFilter(D); >> > >> > list1.addFilter(A) >> > list1.addFilter(list2); >> > >> > Basically I want to check whether A and one of B,C or D, conditions are >> met. >> > Will this work as expected.? >> > >> > thanks >> > Sanjay >> > >> >
