Yahoo! engineering teams are developing technologies to enable Storm applications and Hadoop applications to be hosted on a single cluster. • We have enhanced Storm to support Hadoop style security mechanism (including Kerberos authentication), and thus enable Storm applications authorized to access Hadoop datasets on HDFS and HBase. • Storm is being integrated into Hadoop YARN for resource management. Storm-on-YARN enables Storm applications to utilize the computation resources in our tens of thousands of Hadoop computation nodes. YARN is used to launch Storm application master (Nimbus) on demand, and enables Nimbus to request resources for Storm application slaves (Supervisors).