[GitHub] [incubator-shardingsphere] kimmking commented on issue #4236: sharing-proxy can't suport mysql 'longblob' data type

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kimmking commented on issue #4236: sharing-proxy can't suport  mysql 'longblob'  data type
URL: https://github.com/apache/incubator-shardingsphere/issues/4236#issuecomment-584517973
 
 
   blob type also has this problem.
   reproduce it:
   1. create a table with a blob type column:
   ```sql
   CREATE TABLE `testblob` (
     `id` bigint(1) NOT NULL,
     `descblob` blob,
     PRIMARY KEY (`id`)
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
   ```
   2. insert a row by mysql-cli directly:
   ```
   mysql> insert into testblob values (1,'\u0083\u0083\u0083\u0083');
   Query OK, 1 row affected (0.01 sec)
   ```
   3. insert a row by proxy:
   ```
   insert into testblob values (1,'\u0083\u0083\u0083\u0083')
   [2020-02-11 15:55:30] [C1000][10002] 2Unknown exception: [null]
   ```
   And in proxy logs, an error can be found:
   ```
   [ERROR] 16:06:47.135 [ShardingSphere-Command-13] o.a.s.s.f.c.CommandExecutorTask - Exception occur:
   java.util.NoSuchElementException: null
   	at java.util.Collections$EmptyIterator.next(Collections.java:4189)
   	at org.apache.shardingsphere.sharding.route.engine.condition.engine.InsertClauseShardingConditionEngine.createShardingCondition(InsertClauseShardingConditionEngine.java:86)
   	at org.apache.shardingsphere.sharding.route.engine.condition.engine.InsertClauseShardingConditionEngine.createShardingConditions(InsertClauseShardingConditionEngine.java:65)
   	at org.apache.shardingsphere.sharding.route.engine.ShardingRouter.getShardingConditions(ShardingRouter.java:116)
   	at org.apache.shardingsphere.sharding.route.engine.ShardingRouter.route(ShardingRouter.java:87)
   	at org.apache.shardingsphere.core.shard.SimpleQueryShardingEngine.route(SimpleQueryShardingEngine.java:54)
   	at org.apache.shardingsphere.core.shard.BaseShardingEngine.executeRoute(BaseShardingEngine.java:109)
   	at org.apache.shardingsphere.core.shard.BaseShardingEngine.shard(BaseShardingEngine.java:91)
   	at org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.wrapper.StatementExecutorWrapper.doShardingRoute(StatementExecutorWrapper.java:85)
   	at org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.wrapper.StatementExecutorWrapper.route(StatementExecutorWrapper.java:71)
   	at org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.execute(JDBCDatabaseCommunicationEngine.java:87)
   	at org.apache.shardingsphere.shardingproxy.backend.text.query.QueryBackendHandler.execute(QueryBackendHandler.java:54)
   	at org.apache.shardingsphere.shardingproxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:75)
   	at org.apache.shardingsphere.shardingproxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:92)
   	at org.apache.shardingsphere.shardingproxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:72)
   	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:748)
   ```
   
   

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