Github user xiaosuo commented on the issue:
https://github.com/apache/thrift/pull/1211
@jeking3 you are correct. In fact, we had found this issue, and we should
do such things at all the error path when notifying the io threads. I will
address this issue in a separated patch.
At the same time, we should setIdle() before calling addTask(). Because the
added task maybe expired and destroyed by other threads due to failing to
notify IO threads, and the latter setIdle() may corrupt the memory.
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