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Posted to common-user@hadoop.apache.org by Mark <st...@gmail.com> on 2011/10/31 18:49:05 UTC

Default Compression

I recently added the following to my core-site.xml

<property>
<name>io.compression.codecs</name>
<value>
  org.apache.hadoop.io.compress.DefaultCodec,
org.apache.hadoop.io.compress.GzipCodec,
org.apache.hadoop.io.compress.BZip2Codec
</value>
</property>

However when I try and test a simple MR job I am seeing the following 
errors in my log.

java.lang.IllegalArgumentException: Compression codec
       org.apache.hadoop.io.compress.DefaultCodec not found.
     at 
org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:116)
     at 
org.apache.hadoop.io.compress.CompressionCodecFactory.<init>(CompressionCodecFactory.java:156)
     at 
org.apache.hadoop.mapreduce.lib.input.TextInputFormat.isSplitable(TextInputFormat.java:51)
     at 
org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:254)
     at 
org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:944)

Aren't these codecs installed by default? If not, how would I enable them?

Thanks

Re: Default Compression

Posted by Mark <st...@gmail.com>.
That did it. Thanks

On 10/31/11 12:52 PM, Joey Echeverria wrote:
> Try getting rid of the extra spaces and new lines.
>
> -Joey
>
> On Mon, Oct 31, 2011 at 1:49 PM, Mark<st...@gmail.com>  wrote:
>> I recently added the following to my core-site.xml
>>
>> <property>
>> <name>io.compression.codecs</name>
>> <value>
>>   org.apache.hadoop.io.compress.DefaultCodec,
>> org.apache.hadoop.io.compress.GzipCodec,
>> org.apache.hadoop.io.compress.BZip2Codec
>> </value>
>> </property>
>>
>> However when I try and test a simple MR job I am seeing the following errors
>> in my log.
>>
>> java.lang.IllegalArgumentException: Compression codec
>>       org.apache.hadoop.io.compress.DefaultCodec not found.
>>     at
>> org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:116)
>>     at
>> org.apache.hadoop.io.compress.CompressionCodecFactory.<init>(CompressionCodecFactory.java:156)
>>     at
>> org.apache.hadoop.mapreduce.lib.input.TextInputFormat.isSplitable(TextInputFormat.java:51)
>>     at
>> org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:254)
>>     at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:944)
>>
>> Aren't these codecs installed by default? If not, how would I enable them?
>>
>> Thanks
>>
>>
>
>

Re: Default Compression

Posted by Joey Echeverria <jo...@cloudera.com>.
Try getting rid of the extra spaces and new lines.

-Joey

On Mon, Oct 31, 2011 at 1:49 PM, Mark <st...@gmail.com> wrote:
> I recently added the following to my core-site.xml
>
> <property>
> <name>io.compression.codecs</name>
> <value>
>  org.apache.hadoop.io.compress.DefaultCodec,
> org.apache.hadoop.io.compress.GzipCodec,
> org.apache.hadoop.io.compress.BZip2Codec
> </value>
> </property>
>
> However when I try and test a simple MR job I am seeing the following errors
> in my log.
>
> java.lang.IllegalArgumentException: Compression codec
>      org.apache.hadoop.io.compress.DefaultCodec not found.
>    at
> org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:116)
>    at
> org.apache.hadoop.io.compress.CompressionCodecFactory.<init>(CompressionCodecFactory.java:156)
>    at
> org.apache.hadoop.mapreduce.lib.input.TextInputFormat.isSplitable(TextInputFormat.java:51)
>    at
> org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:254)
>    at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:944)
>
> Aren't these codecs installed by default? If not, how would I enable them?
>
> Thanks
>
>



-- 
Joseph Echeverria
Cloudera, Inc.
443.305.9434