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For big data students cloudera conducts two exams, CCP Data Engineer Exam (DE575) & CCA Spark and Hadoop Developer Exam (CCA175)
Please find below the details of both the certifications.
CCP Data Engineer Exam :- http://www.cloudera.com/training/certification/ccp-data-engineer.html
CCA Spark and Hadoop Developer Exam :- http://www.cloudera.com/training/certification/cca-spark.html
Hortonworks also conducts two exams for big data student, in one certification spark is also involved and in one pure hadoop components are asked.
Below is the link for more details about the certification.
Feel free to contact us in case you have any query.