這篇文章主要講解了“sqoop從MySQL向hive中導(dǎo)數(shù)據(jù)時(shí)報(bào)數(shù)據(jù)庫(kù)訪問(wèn)被拒絕怎么辦”，文中的講解內(nèi)容簡(jiǎn)單清晰，易于學(xué)習(xí)與理解，下面請(qǐng)大家跟著小編的思路慢慢深入，一起來(lái)研究和學(xué)習(xí)“sqoop從mysql向hive中導(dǎo)數(shù)據(jù)時(shí)報(bào)數(shù)據(jù)庫(kù)訪問(wèn)被拒絕怎么辦”吧！

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sqoop從mysql向hive中導(dǎo)數(shù)據(jù)，報(bào)數(shù)據(jù)庫(kù)訪問(wèn)被拒絕。但詭異的是，sqoop的報(bào)錯(cuò)是提示連接本機(jī)的mysql被拒絕了，并不是提示連接目標(biāo)數(shù)據(jù)所在的mysql被拒絕。我的還連了zookeeper，還會(huì)提示連接所有的zookeeper主機(jī)的mysql被拒絕。日志如最下方。

其實(shí)這些問(wèn)題都是一個(gè)原因，就是目標(biāo)數(shù)據(jù)所在的mysql限制了zookeeper的主機(jī)去訪問(wèn)它。只需要在該mysql上授權(quán)即可。

執(zhí)行

grant all privileges on *.* to hadoop@'%' identified by 'password';
flush privileges;

出錯(cuò)日志：

15/09/17 10:51:30 ERROR manager.SqlManager: Error executing statement: java.sql.SQLException: Access denied for user 'hadoop'@'192.168.1.110' (using password: YES)
java.sql.SQLException: Access denied for user 'hadoop'@'192.168.1.110' (using password: YES)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1094)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4208)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4140)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925)
        at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1747)
        at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1287)
        at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2494)
        at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2527)
        at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2309)
        at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834)
        at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:46)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:408)
        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:419)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:344)
        at java.sql.DriverManager.getConnection(DriverManager.java:571)
        at java.sql.DriverManager.getConnection(DriverManager.java:215)
        at org.apache.sqoop.manager.SqlManager.makeConnection(SqlManager.java:885)
        at org.apache.sqoop.manager.GenericJdbcManager.getConnection(GenericJdbcManager.java:52)
        at org.apache.sqoop.manager.SqlManager.execute(SqlManager.java:744)
        at org.apache.sqoop.manager.SqlManager.execute(SqlManager.java:767)
        at org.apache.sqoop.manager.SqlManager.getColumnInfoForRawQuery(SqlManager.java:270)
        at org.apache.sqoop.manager.SqlManager.getColumnTypesForRawQuery(SqlManager.java:241)
        at org.apache.sqoop.manager.SqlManager.getColumnTypesForQuery(SqlManager.java:234)
        at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:304)
        at org.apache.sqoop.orm.ClassWriter.getColumnTypes(ClassWriter.java:1833)
        at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1645)
        at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:107)
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)
        at org.apache.sqoop.Sqoop.run(Sqoop.java:143)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)
        at org.apache.sqoop.Sqoop.main(Sqoop.java:236)
15/09/17 10:51:30 ERROR tool.ImportTool: Encountered IOException running import job: java.io.IOException: No columns to generate for ClassWriter
        at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1651)
        at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:107)
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)
        at org.apache.sqoop.Sqoop.run(Sqoop.java:143)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)
        at org.apache.sqoop.Sqoop.main(Sqoop.java:236)

感謝各位的閱讀，以上就是“sqoop從mysql向hive中導(dǎo)數(shù)據(jù)時(shí)報(bào)數(shù)據(jù)庫(kù)訪問(wèn)被拒絕怎么辦”的內(nèi)容了，經(jīng)過(guò)本文的學(xué)習(xí)后，相信大家對(duì)sqoop從mysql向hive中導(dǎo)數(shù)據(jù)時(shí)報(bào)數(shù)據(jù)庫(kù)訪問(wèn)被拒絕怎么辦這一問(wèn)題有了更深刻的體會(huì)，具體使用情況還需要大家實(shí)踐驗(yàn)證。這里是創(chuàng)新互聯(lián)，小編將為大家推送更多相關(guān)知識(shí)點(diǎn)的文章，歡迎關(guān)注！