Re: lots of DigestMismatchException in cassandra3

2016-11-22 Thread kurt Greaves
Pan, Adeline (TR Technology & Ops) > *Cc:* user@cassandra.apache.org > *Subject:* Re: lots of DigestMismatchException in cassandra3 > > > > Yes it could potentially impact performance if there are lots of them. The > mismatch would occur on a read, the error occurs on a write which is why > th

RE: lots of DigestMismatchException in cassandra3

2016-11-22 Thread Adeline.Pan
, 2016 6:51 AM To: Pan, Adeline (TR Technology & Ops) Cc: user@cassandra.apache.org Subject: Re: lots of DigestMismatchException in cassandra3 Yes it could potentially impact performance if there are lots of them. The mismatch would occur on a read, the error occurs on a write which is why the t

Re: lots of DigestMismatchException in cassandra3

2016-11-22 Thread kurt Greaves
ce issue when lots of this > “Mismatch” happened? > > > > -- > > Regards, Adeline > > > > > > > > *From:* kurt Greaves [mailto:k...@instaclustr.com] > *Sent:* Monday, November 21, 2016 5:02 PM > *To:* user@cassandra.apache.org > *Cc:* tommy.sten

RE: lots of DigestMismatchException in cassandra3

2016-11-21 Thread Adeline.Pan
DigestMismatchException in cassandra3 Actually, just saw the error message in those logs and what you're looking at is probably https://issues.apache.org/jira/browse/CASSANDRA-12694<https://urldefense.proofpoint.com/v2/url?u=https-3A__issues.apache.org_jira_browse_CASSANDRA-2D12694&am

Re: lots of DigestMismatchException in cassandra3

2016-11-21 Thread kurt Greaves
Actually, just saw the error message in those logs and what you're looking at is probably https://issues.apache.org/jira/browse/CASSANDRA-12694 Kurt Greaves k...@instaclustr.com www.instaclustr.com On 21 November 2016 at 08:59, kurt Greaves wrote: > That's a debug message. From the sound of i

RE: lots of DigestMismatchException in cassandra3

2016-11-21 Thread kurt Greaves
That's a debug message. From the sound of it, it's triggered on read where there is a digest mismatch between replicas. As to whether it's normal, well that depends on your cluster. Are the nodes reporting lots of dropped mutations and are you writing at

RE: lots of DigestMismatchException in cassandra3

2016-11-20 Thread Adeline.Pan
e: lots of DigestMismatchException in cassandra3 Hi, Could it be CASSANDRA-12090<https://urldefense.proofpoint.com/v2/url?u=https-3A__issues.apache.org_jira_browse_CASSANDRA-2D12090&d=CwMF-g&c=4ZIZThykDLcoWk-GVjSLm9hvvvzvGv0FLoWSRuCSs5Q&r=552xSDXEzKpvsyZM5wpE0TGEUDzVsX35L-K

Re: lots of DigestMismatchException in cassandra3

2016-11-17 Thread Tommy Stendahl
Hi, Could it be CASSANDRA-12090 ? Regards, /Tommy On 2016-11-17 09:47, adeline@thomsonreuters.com wrote: Hi, We are using Cassandra 3.7 and we have a single datacenter of 4 nodes, RF =3, and the consistency level is quorum. I fo

lots of DigestMismatchException in cassandra3

2016-11-17 Thread Adeline.Pan
Hi, We are using Cassandra 3.7 and we have a single datacenter of 4 nodes, RF =3, and the consistency level is quorum. I found lots of DigestMismatchException in debug.log, as below: DEBUG [ReadRepairStage:11] 2016-11-17 08:24:57,066 ReadCallback.java:235 - Digest mismatch: org.apache.cassandra.