Github user viirya commented on the issue:
https://github.com/apache/spark/pull/19418
From the stacktrace posted in the JIRA, the problematic code is:
/* 151 */ comp = agg_bufValue.compare(smj_value3);
`agg_bufValue` is a `long` but `smj_value3` is a `UTF8String`. It looks
strange because we should not to compare two variable in different types at
all.
Looks like you don't have re-producible codes for this issue. So I don't
think you found the root cause.
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