Hi
Did you install Snappy , following the instructions present on the website?
Just for reference quoting from there
1. Expand hadoop-snappy-0.0.1-SNAPSHOT.tar.gz file
Copy (recursively) the lib directory of the expanded tarball in the
<HADOOP_HOME>/lib of all Hadoop nodes
$ cp -r hadoop-snappy-0.0.1-SNAPSHOT/lib/* <HADOOP_HOME>/lib
IMPORTANT: Hadoo Snappy 0.0.1-SNAPSHOT tarball includes Snappy native
library.
2. Add the following key/value pairs into core-site.xml
<property>
<name>io.compression.codecs</name>
<value>
org.apache.hadoop.io.compress.GzipCodec,
org.apache.hadoop.io.compress.DefaultCodec,
org.apache.hadoop.io.compress.BZip2Codec,
org.apache.hadoop.io.compress.SnappyCodec
</value>
</property>
3. Restart Hadoop.
More details
http://code.google.com/p/hadoop-snappy/
Thanks
Jagat
On Thu, Mar 22, 2012 at 5:00 PM, hadoop hive <[email protected]> wrote:
> HI Folks,
>
> i follow all ther steps and build and install snappy and after creating
> sequencetable when i m insert overwrite the data into this table its
> throwing this error.
>
>
> java.io.IOException: Cannot create an instance of InputFormat class
> org.apache.hadoop.mapred.TextInputFormat as specified in mapredWork!
> at
> org.apache.hadoop.hive.ql.io.HiveInputFormat.getInputFormatFromCache(HiveInputFormat.java:197)
> at
> org.apache.hadoop.hive.ql.io.HiveInputFormat.getRecordReader(HiveInputFormat.java:236)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:338)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
> at org.apache.hadoop.mapred.Child.main(Child.java:170)
> Caused by: java.lang.RuntimeException: Error in configuring object
> at
> org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
> at
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
> at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
> at
> org.apache.hadoop.hive.ql.io.HiveInputFormat.getInputFormatFromCache(HiveInputFormat.java:193)
> ... 4 more
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
> ... 7 more
> Caused by: java.lang.IllegalArgumentException: Compression codec
> org.apache.hadoop.io.compress.SnappyCodec not found.
> at
> org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:96)
> at
> org.apache.hadoop.io.compress.CompressionCodecFactory.(CompressionCodecFactory.java:134)
> at
> org.apache.hadoop.mapred.TextInputFormat.configure(TextInputFormat.java:41)
> ... 12 more
> Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.io.compress.SnappyCodec
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:247)
> at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:762)
> at
> org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:89)
> ... 14 more
>
>
>
>
