The Ultimate Guide to Choosing WordPress Pros and Cons
Why is my Hadoop cluster slow?
1. Why is my Hadoop* job slow?
Bikas Saha
@bikassaha
*Apache Hadoop, Falcon, Atlas, Tez, Sqoop, Flume, Kafka, Pig, Hive,
HBase, Accumulo, Storm, Solr, Spark, Ranger, Knox, Ambari, ZooKeeper,
Oozie, Zeppelin and the Hadoop elephant logo are trademarks of the
Apache Software Foundation.
Hitesh Shah
It is now possible to infer which application/job did what in HDFS
Files created can be tracked down to the MR or Tez job and the specific task attempt that created them.
Using simple string manipulation and aggregations, you can file jobs inducing high loads against the Namenode.
Tracking what YARN maps to what application type and instance is now much easier.
It could made more easier if “mr_attempt_1464484887407_0007_m_000000_0” pointed to an oozie worklow instead of the MR job
Who killed my application and how (command-line, webservice)?