And - as an addition: Shoudln't that be documented that even snapshot files can change?
> I guess this might come from the incremental repairs... >> The repair time is stored in the sstable (RepairedAt timestamp metadata). > > ok, that sounds interesting. > Could that also happen to incremental backup files as well? I had another > case where incremental backup files were totally deleted automagically. > > And - what is the suggested way to solve that problem? Should i try again > tar-ing the snapshot until it doesn't happen anymore that something changes > in between? > Or is there a way to "pause" the incremental repairs? > > >> Cheers, >> Reynald >> >> On 31/05/2016 11:03, Paul Dunkler wrote: >>> Hi there, >>> >>> i am sometimes running in very strange errors while backing up snapshots >>> from a cassandra cluster. >>> >>> Cassandra version: >>> 2.1.11 >>> >>> What i basically do: >>> 1. nodetool snapshot >>> 2. tar all snapshot folders into one file >>> 3. transfer them to another server >>> >>> What happens is that tar just sometimes give the error message "file >>> changed as we read it" while its adding a .db-file from the folder of the >>> previously created snapshot. >>> If i understand everything correct, this SHOULD never happen. Snapshots >>> should be totally immutable, right? >>> >>> Am i maybe hitting a bug or is there some rare case with running repair >>> operations or what-so-ever which can change snapshotted data? >>> I already searched through cassandra jira but couldn't find a bug which >>> looks related to this behaviour. >>> >>> Would love to get some help on this. >>> >>> — >>> Paul Dunkler >> > > — > Paul Dunkler > > ** * * UPLEX - Nils Goroll Systemoptimierung > > Scheffelstraße 32 > 22301 Hamburg > > tel +49 40 288 057 31 > mob +49 151 252 228 42 > fax +49 40 429 497 53 > > xmpp://pauldunk...@jabber.ccc <xmpp://pauldunk...@jabber.ccc>.de > > http://uplex.de/ <http://uplex.de/> — Paul Dunkler ** * * UPLEX - Nils Goroll Systemoptimierung Scheffelstraße 32 22301 Hamburg tel +49 40 288 057 31 mob +49 151 252 228 42 fax +49 40 429 497 53 xmpp://pauldunk...@jabber.ccc <xmpp://pauldunk...@jabber.ccc>.de http://uplex.de/ <http://uplex.de/>
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