Hi,

Looks like the issue is related to https://issues.apache.org/jira/browse/IGNITE-12800.
I've not fixed it yet in Ignite.

Hmm. I guess the error is happen when you select from REPLICATED cache. Am I right? Now I recommend don't use 'lazy' mode via JDBC client for local queries and for query from replicated caches
(because it is transforms to local query).

I suppose we'll fix it at 2.8.1.

On 17.03.2020 4:32, yangjiajun wrote:
Hello.Thanks for u reply.

Actually I am using Hakaricp connection pool.I think my threads can't use
same connection at same time.The threads can only reuse same connection at
different time.My code works well in ignite 2.7 and it also works when I set
lazy=false in ignite 2.8.



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