Hi Anil, I was referring to timestamp due to the first statement of this documentation- https://geode.apache.org/docs/guide/12/developing/distributed_regions/how_region_versioning_works.html#topic_C5B74CCDD909403C815639339AA03758:
“Each region stores version and timestamp information for use in conflict detection. Geode members use the recorded information to detect and resolve conflicts consistently before applying a distributed update.” Although going now after re-reading that I do see that apart from that statement timestamp is not mentioned at all. Thanks, Vahram. From: Anilkumar Gingade <[email protected]> Sent: Wednesday, July 18, 2018 9:04 PM To: [email protected] Subject: Re: Time difference between cluster members >> could this time difference create some inconsistence in case of replicated >> regions? No it doesn't. The consistency check mechanism doesn't use timestamp within the cluster. -Anil. On Wed, Jul 18, 2018 at 6:35 AM Vahram Aharonyan <[email protected]<mailto:[email protected]>> wrote: Hi Bruce, Anthony, Thank you very much for your replies. One more question – could this time difference create some inconsistence in case of replicated regions? Will this affect conflict checking that happens before region updates to detect and resolve concurrent and out-of-order updates? Thanks, Vahram. From: Bruce Schuchardt <[email protected]<mailto:[email protected]>> Sent: Wednesday, July 11, 2018 7:52 PM To: [email protected]<mailto:[email protected]> Subject: Re: Time difference between cluster members The only time-sync thing I can think of is tombstone expiration. The concurrency control mechanism creates tombstones when entries in the cache are destroyed. While there is a distributed garbage collection mechanism to take care of removing tombstones there is also a local check to see if a tombstone has expired, so you don't want to have big clock skews between your servers. On 7/11/18 2:34 AM, Vahram Aharonyan wrote: Hi All, Any input on this would be highly appreciated. Thanks, Vahram. From: Vahram Aharonyan <[email protected]><mailto:[email protected]> Sent: Friday, July 6, 2018 4:31 PM To: [email protected]<mailto:[email protected]> Subject: Time difference between cluster members Hi All, Could someone help to understand whether there is some threshold on time difference between Geode cluster members if they have the same time zone? Or all members should be in sync from time point of view for normal functioning? Thanks, Vahram.
