(Andrew, see hdfs-127 on its tail for update) Zlatin:
IMO, its better keeping hdfs-127. You actually can't run an hbase cluster of any size without it. The rate at which files go bad -- dfsclient turns into a zombie after accumulating 3 errors after any 3 transient failures -- does the cluster a mortal blow. The scenario where all replicas go away is relatively rare and probably indicative of a more serious hdfs issue though, according to the issue, when it happens, its ugly with dfsclient going into an infinite loop. St.Ack On Tue, Jan 12, 2010 at 12:05 PM, Andrew Purtell <apurt...@apache.org>wrote: > Hi, > > > Out of curiosity, since HDFS-127 was recently deemed harmful and > > reverted, will 0.20.3 still ship with patched version of Hadoop? > > Do you have a reference for that? > > > Do you still recommend that patch be applied when running Hbase? > > We needed that patch so long running HBase processes could ride over > intermittent DFS problems. Otherwise, the stream would become > unusable as soon as the errors accumulate, like the issue discusses. > > It may still be an important patch for HBase even though there is > some problem with it otherwise. > > - Andy > > > > ----- Original Message ---- > > From: "zlatin.balev...@barclayscapital.com" < > zlatin.balev...@barclayscapital.com> > > To: hbase-dev@hadoop.apache.org > > Sent: Tue, January 12, 2010 11:34:49 AM > > Subject: RE: Vote on hbase-0.20.3RC1 > > > > Out of curiosity, since HDFS-127 was recently deemed harmful and > > reverted, will 0.20.3 still ship with patched version of Hadoop? > > > > Do you still recommend that patch be applied when running Hbase? > > > > Zlatin > > _______________________________________________ > > > > This e-mail may contain information that is confidential, privileged or > > otherwise protected from disclosure. If you are not an intended recipient > of > > this e-mail, do not duplicate or redistribute it by any means. Please > delete it > > and any attachments and notify the sender that you have received it in > error. > > Unless specifically indicated, this e-mail is not an offer to buy or sell > or a > > solicitation to buy or sell any securities, investment products or other > > financial product or service, an official confirmation of any > transaction, or an > > official statement of Barclays. Any views or opinions presented are > solely those > > of the author and do not necessarily represent those of Barclays. This > e-mail is > > subject to terms available at the following link: > > www.barcap.com/emaildisclaimer. By messaging with Barclays you consent > to the > > foregoing. Barclays Capital is the investment banking division of > Barclays Bank > > PLC, a company registered in England (number 1026167) with its registered > office > > at 1 Churchill Place, London, E14 5HP. This email may relate to or be > sent from > > other members of the Barclays Group. > > _______________________________________________ > > > > > >
