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From "Mohapatra, Kishore" <Kishore.Mohapa...@nuance.com>
Subject RE: [EXTERNAL] Lot of hints piling up
Date Tue, 24 Oct 2017 21:51:05 GMT
Check how many sstables are there for the table you are having issues with.
You might be having the Heap pressure. Check your system.log for any OOM error or HEAP error.

Thanks

Kishore Mohapatra
Principal Operations DBA
Seattle, WA
Email : kishore.mohapatra@nuance.com<mailto:kishore.mohapatra@nuance.com>


From: Jai Bheemsen Rao Dhanwada [mailto:jaibheemsen@gmail.com]
Sent: Monday, October 23, 2017 11:54 AM
To: user@cassandra.apache.org
Subject: Re: [EXTERNAL] Lot of hints piling up

Do not see any errors in the logs or OS and compactions are happening in the regular interval
and good too.


Issue here is, this causing replication lag across the datacenters.

On Mon, Oct 23, 2017 at 10:23 AM, Mohapatra, Kishore <Kishore.Mohapatra@nuance.com<mailto:Kishore.Mohapatra@nuance.com>>
wrote:
Do you see any error in the cassandra log ?
Check compactionstats ?
Also check the OS level log messages to see if you are getting hardware level error messages.

Thanks

Kishore Mohapatra
Principal Operations DBA
Seattle, WA
Ph : 425-691-6417 (cell)
Email : kishore.mohapatra@nuance.com<mailto:kishore.mohapatra@nuance.com>


From: Jai Bheemsen Rao Dhanwada [mailto:jaibheemsen@gmail.com<mailto:jaibheemsen@gmail.com>]
Sent: Friday, October 20, 2017 9:44 AM
To: user@cassandra.apache.org<mailto:user@cassandra.apache.org>
Subject: [EXTERNAL] Lot of hints piling up

Hello,

We have cassandra cluster in 3 regions with version 2.1.13, and all of a sudden we started
seeing lot of hints accumulating on the nodes. We are pretty sure there is no issue with the
network between the regions and all the nodes are up and running all the time.

Is there any other reason for the hints accumulation other than the n/w? eg: wide rows or
bigger objects?

Any pointers here could be very helpful.

b/w the hints gets processed after some point of time.

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