hive报错NoViableAltException(-1@[146:1: fromSource : ( ( LPAREN KW

设置了一个采集方案把客户端的数据发送到kafka消费者，然后再由消费者数据上传到hive上面。

通过使用hudi对数据进行落地，在hive中却无法查表

hive(odw_news)>select * from user;
NoViableAltException(-1@[146:1: fromSource : ( ( LPAREN KW_VALUES )=> fromSource0 | ( LPAREN )=> LPAREN joinSource RPAREN -> joinSource | fromSource0 );])
	at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser$DFA19.specialStateTransition(HiveParser_FromClauseParser.java:11641)
	at org.antlr.runtime.DFA.predict(DFA.java:80)
	at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.fromSource(HiveParser_FromClauseParser.java:3813)
	at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.joinSource(HiveParser_FromClauseParser.java:1959)
	at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.fromClause(HiveParser_FromClauseParser.java:1584)
	at org.apache.hadoop.hive.ql.parse.HiveParser.fromClause(HiveParser.java:51810)
	at org.apache.hadoop.hive.ql.parse.HiveParser.selectStatement(HiveParser.java:45682)
	at org.apache.hadoop.hive.ql.parse.HiveParser.regularBody(HiveParser.java:45568)
	at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementexpressionBody(HiveParser.java:44584)
	at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementexpression(HiveParser.java:44454)
	at org.apache.hadoop.hive.ql.parse.HiveParser.execStatement(HiveParser.java:1696)
	at org.apache.hadoop.hive.ql.parse.HiveParser.statement(HiveParser.java:1178)
	at org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:204)
	at org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:166)
	at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:444)
	at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1242)
	at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1384)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1171)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1161)
	at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:232)
	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:183)
	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:399)
	at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:776)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:714)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
FAILED: ParseException line 1:18 cannot recognize input near 'user' '' '' in from source

为什么会报无效异常呢？

其实hive中的表名不能设置特殊用户名，比如user。

可是我们的表名就是user

所以在hive中查询应该是

select * from `user`;

特殊字符一定要用反单引号括起来！