HIVE Map Join is nothing but the extended version of Hash Join of SQL Server - just extending Hash Join into Distributed System. SMB(Sort Merge Bucket) Join is also similar to the SQL Server Merge Join mechnism - just extending it into Distributed S
1. 连接mysql 首先需要把mysql-connector-java-5.1.39.jar 拷贝到 spark 的jars目录里面: scala> import org.apache.spark.sql.SQLContextimport org.apache.spark.sql.SQLContext scala> val sqlContext=new SQLContext(sc)warning: there was one deprecation warning; re-run with
问题: spark集成hive,启动spark-shell或者spark-sql的时候,报错: INFO MetaStoreDirectSql: MySQL check failed, assuming we are not on mysql: Lexical error at line 1, column 5. Encountered: "@" (64), after : "". 环境: spark-1.4 hive-1.2.1 mysql-5.1 jdbc驱动
在spark集群中执行./spark-shell时报以下错误: 18/07/23 10:02:39 WARN DataNucleus.Connection: BoneCP specified but not present in CLASSPATH (or one of dependencies)18/07/23 10:02:39 WARN metastore.HiveMetaStore: Retrying creating default database after error: Error