Sqoop import all tables

Command

@@ -886,3 +886,61 @@ so we need to manually delete it.
 
 
 
+***** Import all table *****
+
+use Warehouse-dir ,since it will create sub directory with table names.
+
+sqoop import-all-tables \
+ --connect "jdbc:mysql://localhost:3306/mytrainingdb" \
+ --username root \
+ --password root \
+ --warehouse-dir /sqoop/alltables/ \
+ --delete-target-dir 
+
+Note: If there are any tables with no primary key,then we cannot have more than one mappers or we cannot use the deafult splits.It will fail in mid way.
+Ley us test it that way first.
+
+Each table must have a single-column primary key.
+You must intend to import all columns of each table.
+You must not intend to use non-default splitting column, nor impose any conditions via a WHERE clause.
+No incremental load is possible
+
+We get error as below,
+
+18/07/07 19:30:56 ERROR tool.BaseSqoopTool: Error parsing arguments for import-all-tables:
+18/07/07 19:30:56 ERROR tool.BaseSqoopTool: Unrecognized argument: --delete-target-dir
+
+So for --import-all-tables,we canno use --delete-target-dir and few others listed below,
+--table, --split-by, --columns, and --where 
+
+So, let us run now,
+
+sqoop import-all-tables \
+ --connect "jdbc:mysql://localhost:3306/mytrainingdb" \
+ --username root \
+ --password root \
+ --warehouse-dir /sqoop/alltables/
+
+
+Note: Recompile with -Xlint:deprecation for details.
+18/07/07 19:36:17 INFO orm.CompilationManager: Writing jar file: /tmp/sqoop-hduser/compile/20a4ac617bb7f2680c617173c408ea19/COMPLETED_TXN_COMPONENTS.jar
+18/07/07 19:36:17 ERROR tool.ImportAllTablesTool: Error during import: No primary key could be found for table COMPLETED_TXN_COMPONENTS. Please specify one with --split-by or perform a sequential import with '-m 1'.
+
+
+
+Since one of the table doesnt have primary key, we are getting above error.
+
+Hence we have to set --auto-reset-to-one-mapper
+So,
+
+ sqoop import-all-tables \
+ --connect "jdbc:mysql://localhost:3306/mytrainingdb" \
+ --username root \
+ --password root \
+ --warehouse-dir /sqoop/alltables/ \
+ --autoreset-to-one-mapper
+
+sqoop list-tables \
+ --connect "jdbc:mysql://localhost:3306/mytrainingdb" \
+ --username root \
+ --password root