Hi,
In BlurNRT class there is a code which loads the existing snapshots:
if (snapshotsDirectoryExists()) {
// load existing snapshots
sdp = new
SnapshotDeletionPolicy(_tableContext.getIndexDeletionPolicy(),
loadExistingSnapshots());
} else {
sdp = new
SnapshotDeletionPolicy(_tableContext.getIndexDeletionPolicy());
}
But now in 4.4 version there is no constructor with second argument. They
changed it corresponding to
LUCENE-4973<http://issues.apache.org/jira/browse/LUCENE-4973>
.
Also to open a old snapshot the
IndexCommit snapshot = snapshotter.getSnapshot(name);
changed to
IndexCommit snapshot = snapshotter.getIndexCommit(long gen);
which takes generation
I am not getting how to get the generation.
I hope you understand what I am trying to say.
Thanks,
Saurabh Gupta
On Tue, Oct 8, 2013 at 2:54 AM, Aaron McCurry <[email protected]> wrote:
> On Mon, Oct 7, 2013 at 4:54 PM, saurabh gupta <[email protected]>
> wrote:
>
> > Hi
> >
> > I am looking an improvement BLUR-208. I am stuck at one place in BlurNRT
> > class where we are loading previous snapshots and set in
> > SnapshotDeletionPolicy. But now there is no way to load previous
> snapshots.
> >
>
> We haven't built a way to load in previous snapshots. We have planned on
> doing so but have not actually implemented it yet. We left the snapshots
> incomplete because at the time we were trying to write an InputFormat for
> Hadoop.
>
> It shouldn't be too hard to do if the table is offline. Online moves to
> previous snapshots will be tricky.
>
>
> >
> > Also SnapshotDeletionPolicy is returning list of IndexCommit and
> otherwise
> > we have to use generation to get the specific IndexCommit. Now I dont
> know
> > how to get the generation.
> >
>
> Are you asking about how it works in Lucene or in Blur? In Blur we create
> a snapshot label to manage the snapshots.
>
> The Lucene basic code needed to open an old snapshot would be something
> like:
>
> IndexCommit snapshot = snapshotter.getSnapshot(name);
>
> DirectoryReader.open(snapshot);
> If you could let us know what / how you would expect Blur to behave when
> loading an old snapshot that would be great. Real world use cases are the
> best to work toward.
>
> Thanks!
>
> Aaron
>
>
>
> > Can anyone help me?
> >
> > Thanks
> > Saurabh
> >
>
