java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
        at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2431)
Caused: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 158 ms ago.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:0)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
        at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2985)
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2871)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3414)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2465)
        at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1383)
        at com.mysql.jdbc.DatabaseMetaData$9.forEach(DatabaseMetaData.java:4826)
        at com.mysql.jdbc.IterateBlock.doForAll(IterateBlock.java:50)
        at com.mysql.jdbc.DatabaseMetaData.getTables(DatabaseMetaData.java:4804)
        at com.mysql.jdbc.DatabaseMetaData$2.forEach(DatabaseMetaData.java:2379)
        at com.mysql.jdbc.IterateBlock.doForAll(IterateBlock.java:50)
        at com.mysql.jdbc.DatabaseMetaData.getColumns(DatabaseMetaData.java:2345)
Caused: org.netbeans.modules.db.metadata.model.api.MetadataException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 158 ms ago.
        at org.netbeans.modules.db.metadata.model.jdbc.JDBCTable.createColumns(JDBCTable.java:171)
        at org.netbeans.modules.db.metadata.model.jdbc.JDBCTable.initColumns(JDBCTable.java:364)
        at org.netbeans.modules.db.metadata.model.jdbc.JDBCTable.getColumns(JDBCTable.java:104)
        at org.netbeans.modules.db.metadata.model.api.Table.getColumns(Table.java:77)
        at org.netbeans.modules.db.explorer.node.ColumnNodeProvider$1.run(ColumnNodeProvider.java:107)
        at org.netbeans.modules.db.explorer.node.ColumnNodeProvider$1.run(ColumnNodeProvider.java:99)
Caused: org.netbeans.modules.db.metadata.model.api.MetadataModelException: org.netbeans.modules.db.metadata.model.api.MetadataException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 158 ms ago.
        at org.netbeans.modules.db.metadata.model.JDBCConnMetadataModel.runReadAction(JDBCConnMetadataModel.java:99)
        at org.netbeans.modules.db.metadata.model.api.MetadataModel.runReadAction(MetadataModel.java:89)
        at org.netbeans.modules.db.explorer.node.ColumnNodeProvider.initialize(ColumnNodeProvider.java:98)
        at org.netbeans.api.db.explorer.node.NodeProvider.getNodes(NodeProvider.java:103)
        at org.netbeans.modules.db.explorer.node.NodeRegistry.getNodes(NodeRegistry.java:149)
        at org.netbeans.api.db.explorer.node.ChildNodeFactory.createKeys(ChildNodeFactory.java:104)
        at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:164)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:577)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1030)