Hadoop

来源： https://stackoverflow.com/questions/48088710/hive-external-table-pointing-to-csv-file-with-embedded-double-quotes

来源： https://stackoverflow.com/questions/48088710/hive-external-table-pointing-to-csv-file-with-embedded-double-quotes

来源： https://stackoverflow.com/questions/26606128/how-to-save-a-file-in-hadoop-with-python

来源： https://stackoverflow.com/questions/6217319/number-of-reducers-for-1-task-in-mapreduce

来源： https://stackoverflow.com/questions/42262335/hadoop-mapreduce-job-stuck-because-auxservicemapreduce-shuffle-does-not-exist

来源： https://stackoverflow.com/questions/42262335/hadoop-mapreduce-job-stuck-because-auxservicemapreduce-shuffle-does-not-exist

来源： https://stackoverflow.com/questions/63002836/unable-to-submit-concurrent-hadoop-jobs

来源： https://stackoverflow.com/questions/63002836/unable-to-submit-concurrent-hadoop-jobs

问题 I am trying to execute a simple select * from table limit 1; Statement in hive on an external table. But facing failue with execption: java.io.IOException:org.apache.avro.AvroTypeException: Found double, expecting union. Can Someone help me understand what this means? I have checked the schema file and the "default":null is already given. What is the exact reason for this exception occuring? I tried understanding an already existing discussion. The schema looks something like this: {"type":

问题 I am trying to execute a simple select * from table limit 1; Statement in hive on an external table. But facing failue with execption: java.io.IOException:org.apache.avro.AvroTypeException: Found double, expecting union. Can Someone help me understand what this means? I have checked the schema file and the "default":null is already given. What is the exact reason for this exception occuring? I tried understanding an already existing discussion. The schema looks something like this: {"type":