not all buckets recorded in bucketsystems cf

While working on the phased updater glue between launchpad and errors I was using two different methods to determine whether not a crash first occurred with a version of package. First I was using, first_appearance with MostCommonProblemsResource in errors/api/resources.py. Then as the backfill of sourceversionbuckets_cf completed I was switched to package-version-new-buckets which calls cassandra.get_package_new_buckets. Anyway, the set of results between the two was different.

Digging, into this the following bucket is returned for glom version 1.20.10-0ubuntu1.1 using first_appearence but not package-version-new-buckets.

u'/us/bin/glom:6:g_assertion_message:g_assertion_message_expr:gda_sql_builder_set_table:Glom::ReportBuilder::report_build_records_field:Glom::ReportBuilder::report_build_headerfooter'

Further digging revealed that the bucket doesn't exist in bucketsystems_cf at all.

In [3]: cassandra.get_package_new_buckets('glom', '1.20.10-0ubuntu1', '1.20.10-0ubuntu1.1')
> /home/bdmurray/source-trees/errors/errors/errors/cassandra.py(491)get_package_new_buckets()
    490 from ipdb import set_trace; set_trace()
--> 491 try:
    492 count = len(bucketsystems_cf.get(bucket, column_count=4))
ipdb> bucketsystems_cf.get(bucket)
*** NotFoundException: NotFoundException(_message=None)
ipdb> bucket
u'/usr/bin/glom:6:g_assertion_message:g_assertion_message_expr:gda_sql_builder_set_table:Glom::ReportBuilder::report_build_records_field:Glom::ReportBuilder::report_build_headerfooter'

The problem page for this bucket is https://errors.ubuntu.com/bucket/?id=/usr/bin/glom%3A6%3Ag_assertion_message%3Ag_assertion_message_expr%3Agda_sql_builder_set_table%3AGlom%3A%3AReportBuilder%3A%3Areport_build_records_field%3AGlom%3A%3AReportBuilder%3A%3Areport_build_headerfooter

and there we can see that this has occurred as recently as 3/16/2013 so I'd expect it to be in bucketsystems.