While doing sqoop export sqoop export --connect jdbc:mysql://ip-172-31-20-247/dbname --username uname --password pwd --table orders --export-dir /orders.txt getting the following error .   18/11/10 16:18:52 INFO mapreduce.Job: map 0% reduce 0% 18/11/10 16:19:00 INFO mapreduce.Job: map 100% reduce 0% 18/11/10 16:19:01 INFO mapreduce.Job: Job job_1537636876515_6580 failed with state FAILED due to: Task failed task_1537636876515_6580_m_000000 Job failed as tasks failed. failedMaps:1 failedReduces:0 18/11/10 16:19:01 INFO mapreduce.Job: Counters: 12 Job Counters Failed map tasks=1 Killed map tasks=3 Launched map tasks=4 Data-local map tasks=4 Total time spent by all maps in occupied slots (ms)=61530 Total time spent by all reduces in occupied slots (ms)=0 Total time spent by all map tasks (ms)=20510 Total vcore-milliseconds taken by all map tasks=20510 Total megabyte-milliseconds taken by all map tasks=31503360 Map-Reduce Framework CPU time spent (ms)=0 Physical memory (bytes) snapshot=0 Virtual memory (bytes) snapshot=0 18/11/10 16:19:01 WARN mapreduce.Counters: Group FileSystemCounters is deprecated. Use org.apache.hadoop.mapreduce.FileSystemCounter instead 18/11/10 16:19:01 INFO mapreduce.ExportJobBase: Transferred 0 bytes in 17.1712 seconds (0 bytes/sec) 18/11/10 16:19:01 INFO mapreduce.ExportJobBase: Exported 0 records. 18/11/10 16:19:01 ERROR mapreduce.ExportJobBase: Export job failed! 18/11/10 16:19:01 ERROR tool.ExportTool: Error during export: Export job failed! Please let me know how to check what the exact error is ? ... View more

Does CCA175 need Hive and pig or mapreduce concepts? If yes in which CCA175 topic it is covered . ... View more

Can anyone give me a summary of the following topics and also please let me know where can I get the details of these topics from CCA 175 certification syllabus ?   Ingest real-time and near-real-time streaming data into HDFS.   Process streaming data as it is loaded onto the cluster.   Load data into and out of HDFS using the Hadoop File System commands. ... View more

I want to learn hadoop and spark.   #1.   Should I use install  Cloudera QuickStart virtual machines ? #2.   Can Cloudera QuickStart virtual machines be installed in Windows 7 ? #3.   I have checked different run-time options from the cloudera website ; for example  CDH 5 (default) ; Cloudera Express  and Cloudera Enterprise (trial). What are the differences between these and in which situations I need these ? ... View more

I have 11 years of experience in Java..  I want to switch to Big data. Which certification should I take? Developer, Data analyst or Administrator? ... View more