Snapshot/restore is always recommended, but is a 1.0 feature. This is a standard API of ES and well supported by the ES team. With that, you can handle all kinds of index data safely on a binary level, fully and incrementally.
Knapsack plugin is for document export/import only. I wrote it to transport _source data harvested over a long time period from a < 1.0 system to a production system. It works on _source or stored fields only. It uses search/query and bulk indexing API without snapshots, so it is up to the admin to stop index writes while knapsack runs. There is also a lookup of index settings and mappings, this information is also included in the export archive file, and re-applied at import time. But, there is no check if these settings/mappings can be applied on the target successfully, this is left to the admin to prepare plugins, analyzers, etc. Aliases are not transported but this is a good idea for improvement. Currently, knapsack plugin does not work on ES 1.3 but I am progressing to implement this. I am adding a Java-level API. Currently it is REST only. Jörg On Thu, Jul 31, 2014 at 11:05 AM, Matteo Moci <mox...@gmail.com> wrote: > Hi All, > I have some questions about the knapsack plugin [1]. > > My idea to use the tool to do a backup to a file, starting from a 0.90.x > instance and then restore it on a different 1.2.x or 1.3.x instance. I see > it can't be done directly, copying to a local/remote cluster. > > Would it work doing an intermediate step with a file? > Or the backup still has metadata about the es version it was generated > from, making it impossible? > > Is the snapshot and restore feature [2] useful in my use case, or not? > > Is the knapsack plugin able to backup and restore also aliases and > mappings, or do I have to manually migrate them before restoring data? > > Thanks for the patience and the great work! > Matteo > > [1] https://github.com/jprante/elasticsearch-knapsack > [2] > http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/modules-snapshots.html > > -- > Matteo Moci > http://mox.fm > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elasticsearch+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/CAONgFZ60jWViqzRVO6_U-rYo6dUzunE3ojv%2BR5U8HX1Lwp4PdA%40mail.gmail.com > <https://groups.google.com/d/msgid/elasticsearch/CAONgFZ60jWViqzRVO6_U-rYo6dUzunE3ojv%2BR5U8HX1Lwp4PdA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoGrXthJjCchEf2oyvXKnSZyBp31nvnAeXwAZJaEkvnT5Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
