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Mck SembWever edited comment on CASSANDRA-2388 at 6/13/11 4:17 PM: ------------------------------------------------------------------- Then (if i understand you correctly) i would need in cassandra.thrift {noformat} /** returns alive endpoints, sorted by proximity, that belong in the same datacenter as the given endpoint */ list<string> get_endpoints_in_same_datacenter(1: string endpoint, 2: required list<string> endpoints) throws (1:InvalidRequestException ire) {noformat} Then the API becomes quite specific to this usecase. Is the performance gain worth it? What's the cost of each client.describe_datacenter(..) call, and probably more important what is the lost performance of writing to the furthest node that's within the same datacenter? was (Author: michaelsembwever): Then (if i understand you correctly) i would need in cassandra.thrift {noformat} /** returns alive endpoints, sorted by proximity, that belong in the same datacenter as the given endpoint */ list<string> get_endpoints_in_same_datacenter(1: string endpoint, 2: required list<string> endpoints) throws (1:InvalidRequestException ire) {noformat} Then the API becomes quite specific this usecase. Is the performance gain worth it? What's the cost of each client.describe_datacenter(..) call, and probably more important what is the lost performance of writing to the furthest node that's within the same datacenter? > ColumnFamilyRecordReader fails for a given split because a host is down, even > if records could reasonably be read from other replica. > ------------------------------------------------------------------------------------------------------------------------------------- > > Key: CASSANDRA-2388 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2388 > Project: Cassandra > Issue Type: Bug > Components: Hadoop > Reporter: Eldon Stegall > Assignee: Mck SembWever > Labels: hadoop, inputformat > Fix For: 0.8.1 > > Attachments: 0002_On_TException_try_next_split.patch, > CASSANDRA-2388.patch, CASSANDRA-2388.patch > > > ColumnFamilyRecordReader only tries the first location for a given split. We > should try multiple locations for a given split. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira