I have been working on this problem for two days and still have not find the way.

**Problem**: Our Spark installed via newest CDH 5 always complains about the lost of LzoCodec class, even after I install the HADOOP\_LZO through Parcels in cloudera manager. **We are running MR1 on CDH 5.0.0-1.cdh5.0.0.p0.47**.

**Try to fix**:
The configurations in [official CDH documentation about 'Using the LZO Parcel](https://www.cloudera.com/content/cloudera-content/cloudera-docs/CM4Ent/4.7.3/Cloudera-Manager-Installation-Guide/cmig_install_LZO_Compression.html)' are also added but the problem is still there.

Most of the googled posts give similar advices to the above. I also suspect that the spark is trying to run against YARN that is not activated there; but I can not find the configuration in CMF or other posts about this topic.

Please give me some help if you know how to deal with it.