That's puzzling, because we have a bunch of system tests that do range scans with randompartitioner. If you can open a ticket with the code to reproduce, I'll have a look. Thanks!
On Thu, Aug 5, 2010 at 1:24 PM, Adam Crain <adam.cr...@greenenergycorp.com> wrote: > I can. I'm using the debian distro. I assume that all that is required is > wiping the data/commitlog directories. > > If I do that, I still get the same result. > > Here's my CF: > > <ColumnFamily Name ="Meas" CompareWith="LongType" /> > > I'm using this to time series measurement data where the keys are measurement > names and the columns are Long unix epoch timestamps in millisecs. My use > case is then to do a range_slice that asks for the first X number of rows, > but only the most recent measurement by using a descending order column > predicate with a limit of 1. > > I have no trouble using this predicate to retrieve columns within a specified > row, but the get_range_slice fails. > > -Adam > > -----Original Message----- > From: Jonathan Ellis [mailto:jbel...@gmail.com] > Sent: Thursday, August 05, 2010 12:22 PM > To: user@cassandra.apache.org > Subject: Re: error using get_range_slice with random partitioner > > can you reproduce starting with a fresh install, no existing data? > > On Thu, Aug 5, 2010 at 12:09 PM, Adam Crain > <adam.cr...@greenenergycorp.com> wrote: >> I've never changed the partitioner from the default random. Other ideas? >> >> I can insert and do column queries using a single key but not range on CF. >> >> -Adam >> >> -----Original Message----- >> From: Jonathan Ellis [mailto:jbel...@gmail.com] >> Sent: Thursday, August 05, 2010 11:33 AM >> To: user@cassandra.apache.org >> Subject: Re: error using get_range_slice with random partitioner >> >> Yes, you should be able to use get_range_slices with RP. >> >> This stack trace looks like you changed your partitioner after the >> node already had data in it. >> >> On Thu, Aug 5, 2010 at 10:06 AM, Adam Crain >> <adam.cr...@greenenergycorp.com> wrote: >>> Hi, >>> >>> I'm on 0.6.4. Previous tickets in the JIRA in searching the web indicated >>> that iterating over the keys in keyspace is possible, even with the random >>> partitioner. This is mostly desirable in my case for testing purposes only. >>> >>> I get the following error: >>> >>> [junit] Internal error processing get_range_slices >>> [junit] org.apache.thrift.TApplicationException: Internal error processing >>> get_range_slices >>> >>> and the following server traceback: >>> >>> java.lang.NumberFormatException: Zero length BigInteger >>> at java.math.BigInteger.<init>(BigInteger.java:295) >>> at java.math.BigInteger.<init>(BigInteger.java:467) >>> at >>> org.apache.cassandra.dht.RandomPartitioner$1.fromString(RandomPartitioner.java:100) >>> at >>> org.apache.cassandra.thrift.CassandraServer.getRangeSlicesInternal(CassandraServer.java:575) >>> >>> I am using the scala cascal client, but am sure that get_range_slice is >>> being called with start and stop set to "". >>> >>> 1) Is batch iteration possible with random partioner? >>> >>> This isn't clear from the FAQ entry on the subject: >>> >>> http://wiki.apache.org/cassandra/FAQ#iter_world >>> >>> 2) The FAQ states that start argument should be "". What should the end >>> argument be? >>> >>> thanks! >>> Adam >>> >>> >> >> >> >> -- >> Jonathan Ellis >> Project Chair, Apache Cassandra >> co-founder of Riptano, the source for professional Cassandra support >> http://riptano.com >> >> >> >> > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of Riptano, the source for professional Cassandra support > http://riptano.com > > > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
