When updating time_to_live, index is not recreated when using mongodb

[David Hill]

When updating time_to_live, index is not dropped/recreated when using mongodb ...

output of getIndexes():
        {
                "v" : 1,
                "key" : {
                        "timestamp" : 1
                },
                "ns" : "ceilometer.meter",
                "expireAfterSeconds" : 31536000,
                "name" : "meter_ttl"
        },

#:/etc/ceilometer# grep time_to_live ceilometer.conf
time_to_live=15768000

According to this chunk of code, it should have been dropped/recreated (unless I'm wrong here):
        indexes = self.db.meter.index_information()

        ttl = cfg.CONF.database.time_to_live

        if ttl <= 0:
            if 'meter_ttl' in indexes:
                self.db.meter.drop_index('meter_ttl')
            return

        if 'meter_ttl' in indexes:
            # NOTE(sileht): manually check expireAfterSeconds because
            # ensure_index doesn't update index options if the index already
            # exists
            if ttl == indexes['meter_ttl'].get('expireAfterSeconds', -1):
                return

            self.db.meter.drop_index('meter_ttl')

        self.db.meter.create_index(
            [('timestamp', pymongo.ASCENDING)],
            expireAfterSeconds=ttl,
            name='meter_ttl'
        )

[ZhiQiang Fan (aji-zqfan)]

1. have you restarted any database related service? such as ceilometer-api, ceilometer-collector?
2. are you using different config file for different service? in such case, are the config file's ttl value same?
3. which mongodb version are you using?

[gordon chung (chungg)]

closing since we can not verify based on info