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Cannot create PoolableConnectionFactory (Unknown database 'connect_db_1')
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Cannot create PoolableConnectionFactory (Database may be already in use: null. Possible solutions: close all other connection(s); use the server mode [90020-192])
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Cannot create PoolableConnectionFactory (I/O-Fehler: The Network Adapter could not establish the connection)
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Cannot create PoolableConnectionFactory (Connection is broken: "javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?: localhost:9100" [90067-192])
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Cannot create PoolableConnectionFactory (isValid() returned false)
via Google Groups by Gopalakrishnan S, 1 year ago
Cannot create PoolableConnectionFactory (Prot ocol error. Session setup failed.)
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'connect_db_1'	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)	at com.mysql.jdbc.Util.getInstance(Util.java:360)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:978)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:870)	at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1659)	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1206)	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2234)	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2265)	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2064)	at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:790)	at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:44)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:395)	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325)	at org.apache.commons.dbcp2.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:39)	at org.apache.commons.dbcp2.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:256)	at org.apache.commons.dbcp2.BasicDataSource.validateConnectionFactory(BasicDataSource.java:2304)	at org.apache.commons.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2290)	at org.apache.commons.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2039)	at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1533)	at com.memsql.spark.connector.MemSQLConnectionPool$.connect(MemSQLConnectionPool.scala:34)	at com.memsql.spark.connector.rdd.MemSQLRDD$$anon$1.(MemSQLRDD.scala:241)	at com.memsql.spark.connector.rdd.MemSQLRDD.compute(MemSQLRDD.scala:231)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:300)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:264)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:300)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:264)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:300)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:264)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:300)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:264)	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:66)	at org.apache.spark.scheduler.Task.run(Task.scala:88)	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)