Hive druid integration error.

[prashant kumar]

Have followed Druid documentation https://cwiki.apache.org/confluence/display/Hive/Druid+Integration.

The error I am facing is:-

     Number of reduce tasks not specified. Estimated from input data size: 1

     In order to change the average load for a reducer (in bytes):

     set hive.exec.reducers.bytes.per.reducer=<number>

     In order to limit the maximum number of reducers:

     set hive.exec.reducers.max=<number>

     In order to set a constant number of reducers:

     set mapreduce.job.reduces=<number>

     java.io.FileNotFoundException: File does not exist: 

     /usr/lib/hive/lib/hive-druid-handler-2.3.0.jar

at org.apache.hadoop.hdfs.DistributedFileSystem$29.doCall(DistributedFileSystem.java:1530)

at org.apache.hadoop.hdfs.DistributedFileSystem$29.doCall(DistributedFileSystem.java:1523)

at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)

at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1

The error saying is unable to find "/usr/lib/hive/lib/hive-druid-handler-2.3.0.jar" Although I am using hive hive-2.3.2.

In order to overcome the above problem have downloaded jar and restarted Hadoop. But it is not solved yet. 

[Pawan Goyal]

use below command to add the jar to the classpath.

hive --auxpath /usr/local/Cellar/hive/2.3.1/libexec/lib/hive-druid-handler-2.3.1.jar,/usr/local/Cellar/hive/2.3.1/libexec/lib/RoaringBitmap-0.5.18.jar