I don't have a lot of Hector experience but it sounds like the way to go. The CLI and cqlsh will take care of this.
Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 2/03/2012, at 10:12 AM, Tharindu Mathew wrote: > There are 2. I'd like to wait till there are one, when I insert the value. > > Going through the code, calling client.describe_schema_versions() seems to > give a good answer to this. And I discovered that if I wait till there is > only 1 version, I will not get this error. > > Is this the best practice if I want to check this programatically? > > On Thu, Mar 1, 2012 at 11:15 PM, aaron morton <aa...@thelastpickle.com> wrote: > use describe cluster in the CLI to see how many schema versions there are. > > Cheers > > ----------------- > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 2/03/2012, at 12:25 AM, Tharindu Mathew wrote: > >> >> >> On Thu, Mar 1, 2012 at 11:47 AM, Tharindu Mathew <mcclou...@gmail.com> wrote: >> Jeremiah, >> >> Thanks for the reply. >> >> This is what we have been doing, but it's not reliable as we don't know a >> definite time that the schema would get replicated. Is there any way I can >> know for sure that changes have propagated? >> [Edit: corrected to a question] >> >> Then I can block the insertion of data until then. >> >> >> On Thu, Mar 1, 2012 at 4:33 AM, Jeremiah Jordan >> <jeremiah.jor...@morningstar.com> wrote: >> The error is that the specified colum family doesn’t exist. If you connect >> with the CLI and describe the keyspace does it show up? Also, after adding >> a new column family programmatically you can’t use it immediately, you have >> to wait for it to propagate. You can use calls to describe schema to do so, >> keep calling it until every node is on the same schema. >> >> >> >> -Jeremiah >> >> >> >> From: Tharindu Mathew [mailto:mcclou...@gmail.com] >> Sent: Wednesday, February 29, 2012 8:27 AM >> To: user >> Subject: Schema change causes exception when adding data >> >> >> >> Hi, >> >> I have a 3 node cluster and I'm dynamically updating a keyspace with a new >> column family. Then, when I try to write records to it I get the following >> exception shown at [1]. >> >> How do I avoid this. I'm using Hector and the default consistency level of >> QUORUM is used. Cassandra version 0.7.8. Replication Factor is 1. >> >> How can I solve my problem? >> >> [1] - >> me.prettyprint.hector.api.exceptions.HInvalidRequestException: >> InvalidRequestException(why:unconfigured columnfamily proxySummary) >> >> at >> me.prettyprint.cassandra.service.ExceptionsTranslatorImpl.translate(ExceptionsTranslatorImpl.java:42) >> >> at >> me.prettyprint.cassandra.service.KeyspaceServiceImpl$10.execute(KeyspaceServiceImpl.java:397) >> >> at >> me.prettyprint.cassandra.service.KeyspaceServiceImpl$10.execute(KeyspaceServiceImpl.java:383) >> >> at >> me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:101) >> >> at >> me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:156) >> >> at >> me.prettyprint.cassandra.service.KeyspaceServiceImpl.operateWithFailover(KeyspaceServiceImpl.java:129) >> >> at >> me.prettyprint.cassandra.service.KeyspaceServiceImpl.multigetSlice(KeyspaceServiceImpl.java:401) >> >> at >> me.prettyprint.cassandra.model.thrift.ThriftMultigetSliceQuery$1.doInKeyspace(ThriftMultigetSliceQuery.java:67) >> >> at >> me.prettyprint.cassandra.model.thrift.ThriftMultigetSliceQuery$1.doInKeyspace(ThriftMultigetSliceQuery.java:59) >> >> at >> me.prettyprint.cassandra.model.KeyspaceOperationCallback.doInKeyspaceAndMeasure(KeyspaceOperationCallback.java:20) >> >> at >> me.prettyprint.cassandra.model.ExecutingKeyspace.doExecute(ExecutingKeyspace.java:72) >> >> at >> me.prettyprint.cassandra.model.thrift.ThriftMultigetSliceQuery.execute(ThriftMultigetSliceQuery.java:58) >> >> >> >> -- >> Regards, >> >> Tharindu >> >> >> >> blog: http://mackiemathew.com/ >> >> >> >> >> >> >> -- >> Regards, >> >> Tharindu >> >> blog: http://mackiemathew.com/ >> >> >> >> >> -- >> Regards, >> >> Tharindu >> >> blog: http://mackiemathew.com/ >> > > > > > -- > Regards, > > Tharindu > > blog: http://mackiemathew.com/ >
