score:1
Accepted answer
the most suspicious line is
val reply_time_it = reply_id.all().get(0).getstring("created_at")
since any non-key field could be absent in the cassandra record, it's very likely to be null
sometimes. you can wrap it in option like
val reply_time_it = option( reply_id.all().get(0).getstring("created_at"))
then you can use methods like getorelse
to get value with default, foreach
to execute side-effecting method if value is present, and map
to make new values based on that.
also you should probably:
- create one session for each partition using
mappartions
ormappartitionswithindex
- create
preparedstatement
for each query \ partition for performance reasons
Source: stackoverflow.com
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