[jira] [Commented] (KUDU-2007) Disallow a local-to-local tablet copy
[ https://issues.apache.org/jira/browse/KUDU-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16007372#comment-16007372 ] Mike Percy commented on KUDU-2007: -- Yeah that could work too. Ideally we would also make --force-copy less necessary in the tools. > Disallow a local-to-local tablet copy > - > > Key: KUDU-2007 > URL: https://issues.apache.org/jira/browse/KUDU-2007 > Project: Kudu > Issue Type: Bug > Components: recovery >Affects Versions: 1.3.1 >Reporter: Mike Percy > > Make a tablet copy from the local server to the local server always fail. > Currently we are missing this validation check. > Some things that might make this a little tricky: > * On multihomed hosts it may be hard to detect that the request is local > * In a recovery scenario, it's possible that a machine restored from backup > could have the same UUID as an existing machine and we may want to copy a > tablet from the tablet to the replacement, or vice versa. So they might end > up having the same UUID. > That said, we could probably pretty easily disallow tablet copies to / from > the same IP/port combination and get most of our safety bang for the buck out > of that. > The situation where 2 hosts have the same UUID in a backup recovery situation > might just be rare enough that we don't want to support it... but if we end > up in such a situation then it may take custom programming to gracefully > recover from, which would be unfortunate. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (KUDU-2007) Disallow a local-to-local tablet copy
[ https://issues.apache.org/jira/browse/KUDU-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16007187#comment-16007187 ] Jean-Daniel Cryans commented on KUDU-2007: -- How about preventing copying to-from the same UUID but add a flag to override it for command line tools? > Disallow a local-to-local tablet copy > - > > Key: KUDU-2007 > URL: https://issues.apache.org/jira/browse/KUDU-2007 > Project: Kudu > Issue Type: Bug > Components: recovery >Affects Versions: 1.3.1 >Reporter: Mike Percy > > Make a tablet copy from the local server to the local server always fail. > Currently we are missing this validation check. > Some things that might make this a little tricky: > * On multihomed hosts it may be hard to detect that the request is local > * In a recovery scenario, it's possible that a machine restored from backup > could have the same UUID as an existing machine and we may want to copy a > tablet from the tablet to the replacement, or vice versa. So they might end > up having the same UUID. > That said, we could probably pretty easily disallow tablet copies to / from > the same IP/port combination and get most of our safety bang for the buck out > of that. > The situation where 2 hosts have the same UUID in a backup recovery situation > might just be rare enough that we don't want to support it... but if we end > up in such a situation then it may take custom programming to gracefully > recover from, which would be unfortunate. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
