contd.. when can the discrepancy in the index arise. Any specific example?
I can not pin point any exact situation. I was referring to situations which can hamper data replication, consistency adversely. e.g. single or multiple Node failures/recovery anything specific to stratio-lucene-index If you want to use extensive search like functionality or special kind of secondary indexing you can explore the stratio-lucene-index option. Thanks, Anup On 3 May 2018 at 10:02, Anup Shirolkar <anup.shirol...@instaclustr.com> wrote: > Hi, > > when can the discrepancy in the index arise. Any specific example? > > > any documentation which says the index automatically rebuilds/keeps >> itself up to date after updations and deletions > > > I was unable to locate anything saying this in Apache C* docs. But here is > Datastax link if that is good for you > https://docs.datastax.com/en/cassandra/3.0/cassandra/dml/ > dmlIndexInternals.html?hl=secondary%2Cindex > > > > On 30 April 2018 at 17:51, Akshit Jain <akshit13...@iiitd.ac.in> wrote: > >> Hi, >> This looks good but when can the discrepancy in the index arise. Any >> specific example? >> Is there any documentation which says the index automatically >> rebuilds/keeps itself up to date after updations and deletions. Also if >> there anything specific to stratio-lucene-index. >> >> Regards >> Akshit Jain >> 9891724697 >> >> On Fri, Apr 27, 2018 at 9:59 AM, Anup Shirolkar < >> anup.shirol...@instaclustr.com> wrote: >> >>> Hi, >>> >>> The secondary indices in Cassandra are maintained continuously as data >>> is written. Also index rebuilding is kicked off automatically when you >>> create a new index. So, there is no good reason to schedule nodetool >>> rebuild_index regularly. >>> >>> However, if you find any discrepancy in the index and data you should >>> run it. Ideally, this should not happen but if it is required as a result >>> of any major activity/failure you can use it. >>> >>> Talking about the load it puts on system, it depends upon the size of >>> index itself. Although it will consume resources, it should not give a >>> major performance hit to the system. >>> >>> Regards, >>> Anup >>> >>> On 27 April 2018 at 13:46, Akshit Jain <akshit13...@iiitd.ac.in> wrote: >>> >>>> Hi, >>>> How frequently one should run nodetool rebuild_index and what's its >>>> impact on performance in terms of iops,cpu utilisation etc. >>>> >>>> Regards >>>> >>>> >>> >> >