来自Presto数据库的Sqoop，[Teradata][JDBC]（11975）不支持的事务隔离级别：2

我能够使用Cli、Spark等连接和查询Presto数据库

但是，当我尝试将Sqoop从PrestoDB实例导入S3时，我得到了以下事务隔离错误：

    8/02/26 03:03:46 DEBUG sqoop.ConnFactory: Loaded manager factory: org.apache.sqoop.manager.oracle.OraOopManagerFactory
18/02/26 03:03:46 DEBUG sqoop.ConnFactory: Loaded manager factory: com.cloudera.sqoop.manager.DefaultManagerFactory
18/02/26 03:03:46 WARN sqoop.ConnFactory: Parameter --driver is set to an explicit driver however appropriate connection manager is not being set (via --connection-manager). Sqoop is going to fall back to org.apache.sqoop.manager.GenericJdbcManager. Please specify explicitly which connection manager should be used next time.
18/02/26 03:03:46 INFO manager.SqlManager: Using default fetchSize of 1000
18/02/26 03:03:46 INFO tool.CodeGenTool: Beginning code generation
18/02/26 03:03:46 DEBUG manager.SqlManager: Execute getColumnInfoRawQuery : SELECT t.* FROM alarm_types AS t WHERE 1=0
18/02/26 03:03:46 DEBUG manager.SqlManager: No connection paramenters specified. Using regular API for making connection.
18/02/26 03:05:56 ERROR manager.SqlManager: Error executing statement: java.sql.SQLException: [Teradata][JDBC](11975) Unsupported transaction isolation level: 2.
java.sql.SQLException: [Teradata][JDBC](11975) Unsupported transaction isolation level: 2.
    at com.teradata.exceptions.ExceptionConverter.toSQLException(Unknown Source)
    at com.teradata.jdbc.common.SConnection.setTransactionIsolation(Unknown Source)
    at org.apache.sqoop.manager.SqlManager.makeConnection(SqlManager.java:891)
    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.getColumnTypes(SqlManager.java:227)
    at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:295)
    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)
18/02/26 03:05:56 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)

我试过使用标准的Facebook驱动程序jar，也试过Teradata Presto Jdbc jar，这两个驱动程序都出现了相同的错误

使用Facebook驱动程序时出现异常：

    18/02/26 19:22:20 ERROR manager.SqlManager: Error executing statement: java.sql.SQLFeatureNotSupportedException: Transactions are not yet supported
java.sql.SQLFeatureNotSupportedException: Transactions are not yet supported
    at com.facebook.presto.jdbc.PrestoConnection.setTransactionIsolation(PrestoConnection.java:220)
    at org.apache.sqoop.manager.SqlManager.makeConnection(SqlManager.java:891)
    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.getColumnTypes(SqlManager.java:227)
    at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:295)
    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)
18/02/26 19:22:20 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)

以下是我的Sqoop命令：

sqoop import \
    -libjars $teradata_jar_path --driver $teradata_driver \
    --verbose \
    --connect jdbc:presto://xxx/<db> \
    --table <tablename> --target-dir s3://<s3-path> \
     --relaxed-isolation

请注意，我也尝试了放松隔离，但得到了相同的错误。任何帮助都将不胜感激

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谢谢

请升级您的Presto安装。我建议你用最新的

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请注意，0.189中添加了对使用SQL语句或标准JDBC机制的事务的支持：

当使用Facebook驱动程序时，是否可以发布stacktrace？谢谢@kokosing，当使用Facebook驱动程序时，我用stacktrace更新了我的问题。有什么线索吗？你用的是什么版本的Presto。请参阅0.195中支持的事务：我目前使用的是Presto版本：0.179-T.1和Presto-jdbc-0.184.jar驱动程序。感谢您对版本0.195的提示，我会查看。切换到0.195后，我能够克服事务问题，但现在得到com.facebook.presto.jdbc.NotImplementedException:Method Connection.preparest陈述尚未实现感谢您的建议Kokosing，我们的生产presto版本目前为0.179，我建议升级。嗨@kokosing，我尝试使用Facebook Presto驱动程序版本：Presto-jdbc-0.205.jar，但仍然得到错误：18/07/12 10:47:02信息管理器.SqlManager:Executing SQL语句：从hive.thor_fttx.v_ams_inv_ont_optical_measurements AS t中选择t*，其中1=0 18/07/12 10:47:02错误管理器.SqlManager:error执行语句：java.SQL.SQLException:Query失败的20180712_104701_01127_ptpsh:连接器支持的隔离级别读取未提交不符合请求的隔离级别读取已提交