Hi, We are working with a two DCs Cassandra cluster (EU and US), so that the distance is over 160 ms between them. I've added a new DC to this cluster, modified the keyspace's replication factor and trying to rebalance it with repair but the repair is very slow (over 10-15 minutes per node per keyspace with ~40 column families). Is it normal with this network latency or something wrong with the cluster or the network connection? :)
[2017-03-15 05:52:38,255] Starting repair command #4, repairing keyspace test20151222 with repair options (parallelism: parallel, primary range: true, incremental: false, job threads: 1, ColumnFamilies: [], dataCenters: [], hosts: [], # of ranges: 32) [2017-03-15 05:54:11,913] Repair session 988bd850-0943-11e7-9c1f-f5ba092c6aea for range [(-3328182031191101706,-3263206086630594139], (-449681117114180865,-426983008087217811], (-4940101276128910421,-4726878962587262390], (-4999008077542282524,-4940101276128910421]] finished (progress: 11%) [2017-03-15 05:55:39,721] Repair session 9a6fda92-0943-11e7-9c1f-f5ba092c6aea for range [(7538662821591320245,7564364667721298414], (8095771383100385537,8112071444788258953], (-1625703837190283897,-1600176580612824092], (-1075557915997532230,-1072724867906442440], (-9152 563942239372475,-9123254980705325471], (7485905313674392326,7513617239634230698]] finished (progress: 14%) [2017-03-15 05:57:05,718] Repair session 9de181b1-0943-11e7-9c1f-f5ba092c6aea for range [(-6471953894734787784,-6420063839816736750], (1372322727565611879,1480899944406172322], (1176263633569625668,1177285361971054591], (440549646067640682,491840653569315468], (-43128299 75221321282,-4177428401237878410]] finished (progress: 17%) [2017-03-15 05:58:39,997] Repair session a18bc500-0943-11e7-9c1f-f5ba092c6aea for range [(5327651902976749177,5359189884199963589], (-5362946313988105342,-5348008210198062914], (-5756557262823877856,-5652851311492822149], (-5400778420101537991,-5362946313988105342], (668 2536072120412021,6904193483670147322]] finished (progress: 20%) [2017-03-15 05:59:11,791] Repair session a44f2ac2-0943-11e7-9c1f-f5ba092c6aea for range [(952873612468870228,1042958763135655298], (558544893991295379,572114658167804730]] finished (progress: 22%) [2017-03-15 05:59:56,197] Repair session a5e13c71-0943-11e7-9c1f-f5ba092c6aea for range [(1914238614647876002,1961526714897144472], (3610056520286573718,3619622957324752442], (-3506227577233676363,-3504718440405535976], (-4120686433235827731,-4098515820338981500], (56515 94158011135924,5668698324546997949]] finished (progress: 25%) [2017-03-15 06:00:45,610] Repair session a897a9e1-0943-11e7-9c1f-f5ba092c6aea for range [(-9007733666337543056,-8979974976044921941]] finished (progress: 28%) [2017-03-15 06:01:58,826] Repair session a927b4e1-0943-11e7-9c1f-f5ba092c6aea for range [(3599745202434925817,3608662806723095677], (3390003128426746316,3391135639180043521], (3391135639180043521,3529019003015169892]] finished (progress: 31%) [2017-03-15 06:03:15,440] Repair session aae06160-0943-11e7-9c1f-f5ba092c6aea for range [(-7542303048667795773,-7300899534947316960]] finished (progress: 34%) [2017-03-15 06:03:17,786] Repair completed successfully [2017-03-15 06:03:17,787] Repair command #4 finished in 10 minutes 39 seconds Bye, Gábor Auth
