Hi Chris, Thanks for reply. Unfortunately, our servers do not have jstack installed. I tried "kill -3 <PID>" option but that is also not generating thread dump.
Is there any other way I can generate thread dump? Thanks & Regards, Atul Atri. On 4 July 2018 at 20:32, Chris Lohfink <clohf...@apple.com> wrote: > Can you take a thread dump (jstack) and share the state of the compaction > threads? Also check for “Exception” in logs > > Chris > > Sent from my iPhone > > On Jul 4, 2018, at 8:37 AM, atul atri <atulatri2...@gmail.com> wrote: > > Hi, > > 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 > > *BatchStatement.java (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. > >
