Java.io.IOException : Initialization of all the collectors failed. The last error in the collector is: null … here is a solution to the problem.
Java.io.IOException : Initialization of all the collectors failed. The last error in the collector is: null
I’m new to MapReduce and I’m trying to find a solution to the problem. I’m trying to link two map reduce jobs. The first job is executing, but in the second job I get an error like the following
INFO mapreduce. Job: Task Id : attempt_1445271708293_0055_m_000000_1, Status : FAILED
Error: java.io.IOException: Initialization of all the collectors failed. Error in last collector was :null
at org.apache.hadoop.mapred.MapTask.createSortingCollector(MapTask.java:414)
at org.apache.hadoop.mapred.MapTask.access$100(MapTask.java:81)
at org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:698)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:770)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
Caused by: java.lang.NullPointerException
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.init(MapTask.java:1011)
at org.apache.hadoop.mapred.MapTask.createSortingCollector(MapTask.java:402)
... 9 more
Solution
I import Text as in the Driver class
import com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider.Text
Replace
import org.apache.hadoop.io.Text
So I got an error and once I corrected it, it started working fine.