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From Sweeta Nanda <Sweeta_Na...@infosys.com>
Subject Sqoop gets hanged for a long time before getting initialized
Date Thu, 29 Dec 2016 04:24:01 GMT
Hello,

I am trying to connect to Oracle database to import data into HDFS, but after submitting the
command, it doesn't start processing it till a very long time. In the example below, it takes
about 3 hours to do so. In parallel, we have about 16 connections trying to connect at the
same time. The cluster is a 18-node cluster. Is there some way to check why the process is
hanging for that long ? Just notice the timestamps.

2016-12-28 13:05:54 :  sqoop import -D mapred.child.java.opts=-Djava.security.egd=file:/dev/../dev/urandom
--connection-param-file oraconnector.prop --connect jdbc:oracle:thin:@//**** --username ***
-P --query "select * from <table> where \$CONDITIONS and id=*** and date='***' " --target-dir
<HDFS_PATH> --null-string '' --null-non-string '' --as-avrodatafile -m 1 -verbose
Warning: /opt/cloudera/parcels/CDH-5.8.3-1.cdh5.8.3.p0.2/bin/../lib/sqoop/../accumulo does
not exist! Accumulo imports will fail.
Please set $ACCUMULO_HOME to the root of your Accumulo installation.
16/12/28 16:19:04 INFO sqoop.Sqoop: Running Sqoop version: 1.4.6-cdh5.8.3
16/12/28 16:19:04 DEBUG tool.BaseSqoopTool: Enabled debug logging.
16/12/28 16:19:04 DEBUG tool.BaseSqoopTool: Loaded connection parameters: {oracle.jdbc.mapDateToTimestamp=false}

With Regards,
Sweeta


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