Details
-
Bug
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Status: Resolved
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Major
-
Resolution: Fixed
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None
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None
Description
-----------------------
| c1 | value | <=== RDBMS reserved word "value" ----------------------- |
| 1 | (null) | <=== null? ----------------------- |
TEST CASE:
STEP 01 - Create MySQL Tables
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "drop table t1"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "create table t1 (c1 int, c2 varchar(5))"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "insert into t1 values (1, 'one')"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "show create table t1"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from t1"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "drop table t1_value"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "create table t1_value (c1 int, \`value\` varchar(5))"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "insert into t1_value select * from t1"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "show create table t1_value"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from t1_value"
Output:
-----------------------------------------------
| Table | Create Table |
-----------------------------------------------
| t1 | CREATE TABLE `t1` ( `c1` int(11) DEFAULT NULL, `c2` varchar(5) DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
-----------------------------------------------
-----------------------
| c1 | c2 |
-----------------------
| 1 | one |
-----------------------
-----------------------------------------------
| Table | Create Table |
-----------------------------------------------
| t1_value | CREATE TABLE `t1_value` ( `c1` int(11) DEFAULT NULL, `value` varchar(5) DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
-----------------------------------------------
-----------------------
| c1 | value |
-----------------------
| 1 | one |
-----------------------
STEP 02 - Verify Import/Export Using --target-dir and --export-dir
sqoop import --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1 --target-dir /user/root/t1 --delete-target-dir --num-mappers 1
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "delete from t1"
sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1 --export-dir /user/root/t1 --num-mappers 1
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from t1"
sqoop import --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1_value --target-dir /user/root/t1 --delete-target-dir --num-mappers 1
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "delete from t1_value"
sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1_value --export-dir /user/root/t1 --num-mappers 1
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from t1_value"
Output:
-----------------------
| c1 | c2 |
-----------------------
| 1 | one |
-----------------------
-----------------------
| c1 | value |
-----------------------
| 1 | one |
-----------------------
STEP 03 - Verify import with --hive-import and export with --hcatalog
beeline -u jdbc:hive2:// -e "use default; drop table t1;"
sqoop import --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1 --target-dir /user/root/t1 --delete-target-dir --hive-import --hive-database default --hive-table t1 --num-mappers 1
beeline -u jdbc:hive2:// -e "use default; select * from t1;"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "delete from t1"
sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1 --hcatalog-database default --hcatalog-table t1 --num-mappers 1
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from t1"
Output:
--------------
| t1.c1 | t1.c2 |
--------------
| 1 | one |
--------------
-----------------------
| c1 | c2 |
-----------------------
| 1 | one |
-----------------------
beeline -u jdbc:hive2:// -e "use default; drop table t1_value;"
sqoop import --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1_value --target-dir /user/root/t1 --delete-target-dir --hive-import --hive-database default --hive-table t1_value --num-mappers 1
beeline -u jdbc:hive2:// -e "use default; select * from t1_value;"
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "delete from t1_value"
sqoop export --connect $MYCONN --username $MYUSER --password $MYPSWD --table t1_value --hcatalog-database default --hcatalog-table t1_value --num-mappers 1
sqoop eval --connect $MYCONN --username $MYUSER --password $MYPSWD --query "select * from t1_value"
Output:
-----------------------------
| t1_value.c1 | t1_value.value |
-----------------------------
| 1 | one |
-----------------------------
-----------------------
| c1 | value |
-----------------------
| 1 | (null) | <========== null? ----------------------- |
beeline -u jdbc:hive2:// -e "use default; show create table t1;"
beeline -u jdbc:hive2:// -e "use default; show create table t1_value;"
Output:
-------------------------------------------------------------------------------+
| createtab_stmt |
-------------------------------------------------------------------------------+
| CREATE TABLE `t1`( |
| `c1` int, |
| `c2` string) |
| COMMENT 'Imported by sqoop on 2016/10/25 17:16:20' |
| ROW FORMAT SERDE |
| 'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe' |
| WITH SERDEPROPERTIES ( |
| 'field.delim'='\u0001', |
| 'line.delim'='\n', |
| 'serialization.format'='\u0001') |
| STORED AS INPUTFORMAT |
| 'org.apache.hadoop.mapred.TextInputFormat' |
| OUTPUTFORMAT |
| 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat' |
| LOCATION |
| 'hdfs://<hostname>:8020/user/hive/warehouse/t1' |
| TBLPROPERTIES ( |
| 'COLUMN_STATS_ACCURATE'='true', |
| 'numFiles'='1', |
| 'totalSize'='6', |
| 'transient_lastDdlTime'='1477440983') |
-------------------------------------------------------------------------------+
-------------------------------------------------------------------------------------+
| createtab_stmt |
-------------------------------------------------------------------------------------+
| CREATE TABLE `t1_value`( |
| `c1` int, |
| `value` string) |
| COMMENT 'Imported by sqoop on 2016/10/25 17:23:02' |
| ROW FORMAT SERDE |
| 'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe' |
| WITH SERDEPROPERTIES ( |
| 'field.delim'='\u0001', |
| 'line.delim'='\n', |
| 'serialization.format'='\u0001') |
| STORED AS INPUTFORMAT |
| 'org.apache.hadoop.mapred.TextInputFormat' |
| OUTPUTFORMAT |
| 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat' |
| LOCATION |
| 'hdfs://<hostname>:8020/user/hive/warehouse/t1_value' |
| TBLPROPERTIES ( |
| 'COLUMN_STATS_ACCURATE'='true', |
| 'numFiles'='1', |
| 'totalSize'='6', |
| 'transient_lastDdlTime'='1477441386') |
-------------------------------------------------------------------------------------+
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