Github user asfgit commented on the issue:
https://github.com/apache/carbondata/pull/890
Refer to this link for build results (access rights to CI server needed):
https://builds.apache.org/job/carbondata-pr-spark-2.1/73/<h2>Failed Tests: <span class='status-failure'>2</span></h2><h3><a name='carbondata-pr-spark-2.1/org.apache.carbondata:carbondata-core' /><a href='
https://builds.apache.org/job/carbondata-pr-spark-2.1/73/org.apache.carbondata$carbondata-core/testReport'>carbondata-pr-spark-2.1/org.apache.carbondata:carbondata-core</a>: <span class='status-failure'>1</span></h3><ul><li><a href='
https://builds.apache.org/job/carbondata-pr-spark-2.1/73/org.apache.carbondata$carbondata-core/testReport/org.apache.carbondata.core.dictionary.client/DictionaryClientTest/testClient/'><strong>org.apache.carbondata.core.dictionary.client.DictionaryClientTest.testClient</strong></a></li></ul><h3><a name='carbondata-pr-spark-2.1/org.apache.carbondata:carbondata-spark-common-test' /><a href='
https://builds.apache.org/job/carbondata-pr-spark-2.1/73/org.apache.carbondata$carbondata-spark-common-test/testReport'>carbondata-pr-spark-2.1/org.apache.carbondata
:carbondata-spark-common-test</a>: <span class='status-failure'>1</span></h3><ul><li><a href='
https://builds.apache.org/job/carbondata-pr-spark-2.1/73/org.apache.carbondata$carbondata-spark-common-test/testReport/org.apache.carbondata.spark.testsuite.allqueries/InsertIntoCarbonTableTestCase/insert_into_carbon_table_from_carbon_table_union_query/'><strong>org.apache.carbondata.spark.testsuite.allqueries.InsertIntoCarbonTableTestCase.insert into carbon table from carbon table union query</strong></a></li></ul>
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