Github user sebbASF commented on the issue:
https://github.com/apache/incubator-ponymail/issues/313
Not sure where I got the impression that one could only set the shard count
through static config in earlier versions. So ignore the bit about requiring ES
5.0.
Regarding test system: I was thinking of a system mainly used for unit
tests, rather than performance or volume testing. I.e. the sort of system one
might want to set up to try the code out.
That is likely to have fewer than 1m docs, so a single shard is sufficient.
This will make it easier for the first time user. Someone intending to use the
system for more exacting purposes would/should review the settings more
carefully.
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