On 03/19/2014 05:18 PM, Noah Watkins wrote: > Err, obviously switching things out for Ceph rather than Gluster. > > On Wed, Mar 19, 2014 at 9:18 AM, Noah Watkins <noah.watkins@xxxxxxxxxxx> wrote: >> Looks like this is a configuration issue that has popped up with other >> 3rd party file systems in Hadoop 2.x with YARN. >> >> http://mail-archives.apache.org/mod_mbox/hadoop-yarn-dev/201306.mbox/%3C1023550423.3137743.1371825668412.JavaMail.root@xxxxxxxxxx%3E >> >> Says use this: >> >> <property> >> <name>fs.AbstractFileSystem.glusterfs.impl</name> >> <value>org.apache.hadoop.fs.glusterfs.GlusterFS</value> >> </property> Interestingly this solves the mapred history server issue. It created the history folder and started. <property> <name>fs.AbstractFileSystem.ceph.impl</name> <value>org.apache.hadoop.fs.ceph.CephHadoop2FileSystem</value> <description> </description> </property> But now this fails as hadoop fs -ls / ls: No FileSystem for scheme: ceph - Gurvinder >> >> Apparently rather than the `fs.ceph.impl` property in 2.x >> >> >> On Wed, Mar 19, 2014 at 9:06 AM, Gurvinder Singh >> <gurvindersinghdahiya@xxxxxxxxx> wrote: >>> On 03/19/2014 04:50 PM, Noah Watkins wrote: >>>> Since `hadoop -fs ls /` seems to work on your local node, can you >>>> verify that (1) it is in fact listing the contents of CephFS, and (2) >>>> that on your worker nodes where the error is occuring that the >>>> relevant dependencies (naming the Ceph hadoop bindings) are installed >>>> and in the classpath? >>> 1) yes it is listing the cephfs contents. >>> 2) Currently the setup is to start the yarn manager and mapreduce >>> history server on the same node and then setup the worker nodes. Yarn >>> starts up fine, but the mapreduce history server gives me the error. The >>> dependency lib are loaded in the mapreduce history server startup. Here >>> is the link to start up message which shows that the libcephfs and >>> cephfs-hadoop jar are loaded. >>> >>> http://pastebin.com/wED7nMMT >>> >>> I am wondering if this property value is correct >>> >>> <property> >>> <name>fs.ceph.impl</name> >>> <value>org.apache.hadoop.fs.ceph.CephFileSystem</value> >>> </property> >>> >>> or should I set it to something for hadoop 2.x I have tried setting it up as >>> >>> org.apache.hadoop.fs.ceph.CephHadoop2FileSystem, then I get this error as >>> >>> # hadoop fs -ls / >>> -ls: Fatal internal error >>> java.lang.RuntimeException: java.lang.NoSuchMethodException: >>> org.apache.hadoop.fs.ceph.CephHadoop2FileSystem.<init>() >>> at >>> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:131) >>> at >>> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2315) >>> at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:90) >>> at >>> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2350) >>> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2332) >>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:369) >>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:168) >>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:353) >>> at org.apache.hadoop.fs.Path.getFileSystem(Path.java:296) >>> at >>> org.apache.hadoop.fs.shell.PathData.expandAsGlob(PathData.java:325) >>> at >>> org.apache.hadoop.fs.shell.Command.expandArgument(Command.java:224) >>> at >>> org.apache.hadoop.fs.shell.Command.expandArguments(Command.java:207) >>> at >>> org.apache.hadoop.fs.shell.Command.processRawArguments(Command.java:190) >>> at org.apache.hadoop.fs.shell.Command.run(Command.java:154) >>> at org.apache.hadoop.fs.FsShell.run(FsShell.java:255) >>> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) >>> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84) >>> at org.apache.hadoop.fs.FsShell.main(FsShell.java:308) >>> Caused by: java.lang.NoSuchMethodException: >>> org.apache.hadoop.fs.ceph.CephHadoop2FileSystem.<init>() >>> at java.lang.Class.getConstructor0(Class.java:2800) >>> at java.lang.Class.getDeclaredConstructor(Class.java:2043) >>> at >>> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:125) >>> ... 17 more >>> >>> Regards, >>> Gurvinder >>> >>>> >>>> The error itself looks like a missing dependency, but that exception >>>> being thrown might also be tirggered by other problems while loading >>>> the bindings. >>>> >>>> On Wed, Mar 19, 2014 at 8:43 AM, Gurvinder Singh >>>> <gurvindersinghdahiya@xxxxxxxxx> wrote: >>>>> On 03/19/2014 03:51 PM, Noah Watkins wrote: >>>>>> On Wed, Mar 19, 2014 at 4:28 AM, Gurvinder Singh >>>>>> <gurvindersinghdahiya@xxxxxxxxx> wrote: >>>>>>> Hi, >>>>>>> >>>>>>> I have ceph 0.72.2 running on debian wheezy with cloudera 5.0 beta 2 >>>>>>> hadoop. I have installed the ceph hadoop binding with hadoop 2.x >>>>>>> support. I am able to run the command such as >>>>>> >>>>>> From github.com/noahdesu/cephfs-hadoop patched with the pull request PR#1? >>>>>> >>>>> Yes. >>>>>> Can you paste your core-site.xml? >>>>> >>>>> Below is the relevant part for ceph conf >>>>> >>>>> <property> >>>>> <name>fs.defaultFS</name> >>>>> <value>ceph://xxxxxxxxxxxx:6789/</value> >>>>> </property> >>>>> >>>>> <property> >>>>> <name>ceph.conf.file</name> >>>>> <value>/etc/ceph/ceph.conf</value> >>>>> </property> >>>>> >>>>> <property> >>>>> <name>ceph.auth.id</name> >>>>> <value>admin</value> >>>>> </property> >>>>> >>>>> <property> >>>>> <name>ceph.auth.keyfile</name> >>>>> <value>/etc/hadoop/conf/admin.secret</value> >>>>> </property> >>>>> >>>>> <property> >>>>> <name>fs.ceph.impl</name> >>>>> <value>org.apache.hadoop.fs.ceph.CephFileSystem</value> >>>>> </property> >>>>> >>>>> >>>>>> >>>>> >>> _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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