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Re: Compaction process stuck

Can you take a thread dump (jstack) and share the state of the compaction threads? Also check for “Exception” in logs


Sent from my iPhone

On Jul 4, 2018, at 8:37 AM, atul atri <atulatri2004@xxxxxxxxx> wrote:


On one of our server, compaction process is hanging. It's stuck at 80%. It was stuck for last 3 days. And today we did a cluster restart (one host at time). And again it is stuck at same 80%. CPU usages are 100% and there seems no IO issue. We are seeing following kinds of WARNING in system.log (line 226) Batch of prepared statements for [****, *****] is of size 7557, exceeding specified threshold of 5120 by 2437.

Other than this there seems no error.  I have tried to stop compaction process, but it does not stop. Cassandra version is 2.1.

 Can someone please guide us in solving this issue?

Thanks & Regards,
Atul Atri.