the 2.0.5 release was always considered alpha -there were some explicitly
added mandatory fields to HDFS, lots of java level changes too. One of the
reasons for that was to have a stable API from 2.2+, which is why 2.2
clients can work with 2.3 and 2.4 clusters today -and later versions of
hadoop 2
Also I tested using hdfs client 2.0 access hdfs server 2.4, this also got
no compatibility:
"Incorrect header or version mismatch from 10.2.201.245:59310 got version
7 expected version 9"
Does this mean if we update our production cluster from 2.0 to 2.4, all
clients must be re-build?
Any suggest
You mean YARN will call some interfaces of FileSystem that not existed in
2.0?
Because I think YARN and MR depend on FileSystem interface of
hadoop-common.
I want to hack as below:
---> HDFS 2.0 > Hadoop-common 2.0
/
YARN and MR
Even if you done this, it's unstable, because Yarn2.4 added some IPC
interfaces. then HDFS MUST has related interfaces.
On Fri, Jun 6, 2014 at 4:22 PM, 张鹏 wrote:
> Hi all,
>
> I want to upgrade to Yarn 2.4 only. But when it access Hdfs, IPC Server
> version is mismached.
>
> HDFS (IPC v7) cant
