Created https://issues.apache.org/jira/browse/CASSANDRA-4458
On Thu, Jul 19, 2012 at 7:56 PM, Jake Luciani <jak...@gmail.com> wrote: > Yeah I worked around this by skipping all but the last call. I need to fix > this properly. Thx for the reminder :) > > > > On Jul 19, 2012, at 7:47 PM, Jonathan Ellis <jbel...@gmail.com> wrote: > >> That smells like a bug to me. I don't see how you can avoid getting >> multiple buildIndexAsync calls kicked off. >> >> What do you think, Jake? >> >> On Thu, May 31, 2012 at 4:46 PM, Adam Holmberg >> <adam.holmberg.l...@gmail.com> wrote: >>> I've been studying and experimenting some with the SecondaryIndex API, >>> specifically extending the PerRowSecondaryIndex class. >>> >>> I understand from this recent >>> thread<http://mail-archives.apache.org/mod_mbox/cassandra-dev/201205.mbox/%3CCAMYB=b6c9HTDgOFHQS-UwS4UF2a6NiMs3+C++iG3M8z4xgzn=g...@mail.gmail.com%3E>that >>> this feature is not yet widely used, but I was hoping someone could >>> shed some light on its intended concept of operation: >>> >>> My intuition was to specify my custom index for every column in the column >>> family that I want to trigger an update for this index. This has the >>> desired effect for a 'built' index as new row mutations arrive. What I'm >>> confused about is what happens as the index is built for the first time. >>> What I'm seeing is that an asynchronous build is kicked off for every >>> column to which this index is attached (which is obviously undesirable). >>> >>> It's plain to see why this is happening following the SecondaryIndexManager >>> reload/addIndexedColumn routines. Now what I'm wondering is if there is >>> room for improvement here: >>> >>> Should the Manager wait to initiate an index build until the last column >>> has been added to a given rowLevelIndex? Or is the impetus on the >>> PerRowSecondaryIndex implementation to 'fool' the manager into bypassing >>> the build until the last column is added? >>> >>> My gut says the former would be preferred since the latter could be a >>> fragile use of the Interface, but I'm just getting into this area and maybe >>> I'm thinking about things wrong. >>> >>> Any input would be appreciated. >>> >>> Regards, >>> Adam Holmberg >> >> >> >> -- >> Jonathan Ellis >> Project Chair, Apache Cassandra >> co-founder of DataStax, the source for professional Cassandra support >> http://www.datastax.com -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
