We are planning to upgrade HBase 0.94.6/Hadoop2.0 to either 0.96.2/Hadoop2.4 or to 0.98.2/Hadoop2.4. But I have a concern ... The 'stable' is still 0.94.19? Does it mean that both 0.96. and 0.98 are not recommended for production yet? And which one should we take 0.96 or 0.98? I know that 0.96 branch is in bug-fix--only mode right now. One more question: future upgrade from 0.96 -> 1.0 and 0.98 -> 1.0? Rolling or not?
Thank you, in advance
Best regards, Vladimir Rodionov Principal Platform Engineer Carrier IQ, www.carrieriq.com e-mail: [EMAIL PROTECTED]
Confidentiality Notice: The information contained in this message, including any attachments hereto, may be confidential and is intended to be read only by the individual or entity to whom this message is addressed. If the reader of this message is not the intended recipient or an agent or designee of the intended recipient, please note that any review, use, disclosure or distribution of this message or its attachments, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or [EMAIL PROTECTED] and delete or destroy any copy of this message and its attachments.
Yes. 0.96 -> 1.0 probably won't be supported unless there is explicit interest and work for it. I doubt that will happen. The reason is hfile v3 is default in 1.0, but 0.96 code base cannot read hfile v3 files. This means that rolling restarts is tricky because if a new server writes a new hfile, old servers cannot read this, the region won't be opened and will keep bouncing until it hits a new server. In theory it should work, but I won't recommend doing it.
0.98 -> 1.0 should work with rolling restarts unless we do an explicit decision to drop the support for some reason. I don't imagine there will be a compelling enough reason to drop support for now. https://issues.apache.org/jira/browse/HBASE-11164 tracks this.
On Tue, May 27, 2014 at 2:59 PM, Enis Söztutar <[EMAIL PROTECTED]> wrote: Agree that that is expected to work. It does in our testing. Let us know if issue. We need to fix it if there is a problem. St.Ack
We've tested 0.96 to 0.98 rolling restart also. This is expected to work as long as you don't enable any 0.98 specific features until the whole fleet is running 0.98. On Tue, May 27, 2014 at 3:26 PM, Stack <[EMAIL PROTECTED]> wrote: Best regards,
Problems worthy of attack prove their worth by hitting back. - Piet Hein (via Tom White)
NEW: Monitor These Apps!
Apache Lucene, Apache Solr and all other Apache Software Foundation projects and their respective logos are trademarks of the Apache Software Foundation.
Elasticsearch, Kibana, Logstash, and Beats are trademarks of Elasticsearch BV, registered in the U.S. and in other countries. This site and Sematext Group is in no way affiliated with Elasticsearch BV.
Service operated by Sematext