Questions for platform to choose

Hello, We have all of spark, flink, storm, kafka installed. For realtime streaming calculation, which one is the best above? Like other big players, the logs in our stack are huge. Thanks. - To unsubscribe e-mail: user-unsubscr

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Re:unresolved operator union in Spark 1.6

You can upgrade your Spark to version 2.x. At 2019-08-20 19:16:50, "马阳阳" wrote: Hi all, We encountered the following problem when using Spark 1.6. The following SQL: ``` SELECT a,b,c FROM A UNION ALL SELECT a,b,c FROM B ``` If A and B are two views created with SQLContext.registerDat

unresolved operator union in Spark 1.6

Hi all, We encountered the following problem when using Spark 1.6. The following SQL: ``` SELECT a,b,c FROM A UNION ALL SELECT a,b,c FROM B ``` If A and B are two views created with SQLContext.registerDataFrameAsTable(), Spark will fail with “unresolved operator Union”. But if A and B are s

Re: Unable to write data from Spark into a Hive Managed table

Please refere to the following documentation on how to write data into hive in hdp3.1 https://docs.hortonworks.com/HDPDocuments/HDP3/HDP-3.1.0/integrating-hive/content/hive_hivewarehouseconnector_for_handling_apache_spark_data.html Harsh On Fri, 9 Aug, 2019, 10:21 PM Mich Talebzadeh, wrote:

Unresolved operator Union in Spark 1.6

Hi all, We encountered the following problem when using Spark 1.6. The following SQL: ``` SELECT a,b,c FROM A UNION ALL SELECT a,b,c FROM B ``` If A and B are two views created with SQLContext.registerDataFrameAsTable(), Spark will fail with “unresolved operator Union”. But if A and B