As Shawn says, there's no hard limit, but having that many fields
almost always indicates a flawed design.

I'd pretty strongly suggest that you reconsider your design with an
eye towards reducing the field count to
something less than, say, 1,000. That number is fairly arbitrary, and
ideally I'd want it even smaller
but it's not a bad target.

And do note that if you elect to do this, the meta-data will still be
hanging around and you must
create a new collection and re-index from scratch to purge it.


On Wed, Jul 11, 2018 at 6:55 AM, Shawn Heisey <> wrote:
> On 7/11/2018 2:05 AM, Sharif Shahriar wrote:
>> Is there any limitation on how many field can be added in a solrcloud
>> collection configset?
>> After adding 24,520 fields when I wan't to add new fields, it shows
>> -"Error persisting managed schema at /configs/*/managed-schema"
>> -"zkClient has disconnected"
> There is no hard limit on the number of fields.  It is likely that you are
> running into something else.   Without detailed logs it's difficult to know
> for sure what the problem is, but I do have one idea:
> The most likely limit that I can think of that you'd be running into is the
> limit on the size of an individual entry in the ZooKeeper database -- your
> schema file is getting too big.  By default this limit is right around one
> megabyte.  Changing it is possible, but it must be done on all ZK servers
> and every single ZK client (which includes Solr).
> If that's not the problem, then we will need to see your logs to figure out
> what the problem might be.  To properly interpret the log, the exact Solr
> version must be known.
> Thanks,
> Shawn

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