We upgraded by creating entirely new clusters with the CDH4.2 software
installed onto it. Then we distributed copied the /hbase directory to the
new clusters. We haven't run a major compaction since then, so that could
be the reason there are still v1 HFiles. This migration took place just a
couple days ago.
On Mon, Mar 4, 2013 at 12:04 PM, Ted Yu <[EMAIL PROTECTED]> wrote:
> In the stack trace, I see HFileReaderV1.java
> I would expect your store files to be upgraded to HFile v2 after cluster
> Can you tell us more about how you upgraded your clusters ?
> On Mon, Mar 4, 2013 at 9:00 AM, Bryan Beaudreault
> <[EMAIL PROTECTED]>wrote:
> > We recently upgraded multiple clusters to CDH 4.2, which comes with hbase
> > 0.94.2 Since then We've seen region servers die periodically in a way I
> > never saw before on CDH3.
> > Here are the exceptions:
> > First I see a slew of these: http://pastebin.com/WqSwMzuZ
> > Then the regionserver starts closing all its regions, after throwing this
> > exception: http://pastebin.com/396wX3iw
> > This has now happened on multiple servers across multiple clusters, all
> > 4.2.
> > Any thoughts? During the time our NameNodes seem to be doing fine and I
> > don't see any issue on our datanodes either.