Hive：是否可以重命名现有的 hive 数据库？

Question

似乎有类似的要求：https://issues.apache.org/jira/browse/HIVE-4847

但是，当我尝试问题描述中建议的语法 - 'ALTER DATABASE dbname RENAME TO newdbname' 时，它给了我以下错误：

ALTER DATABASE testdb RENAME TO testdb1;

NoViableAltException(26@[])
    at org.apache.hadoop.hive.ql.parse.HiveParser.alterDatabaseStatementSuffix(HiveParser.java:7881)
    at org.apache.hadoop.hive.ql.parse.HiveParser.alterStatement(HiveParser.java:6588)
    at org.apache.hadoop.hive.ql.parse.HiveParser.ddlStatement(HiveParser.java:2183)
    at org.apache.hadoop.hive.ql.parse.HiveParser.execStatement(HiveParser.java:1392)
    at org.apache.hadoop.hive.ql.parse.HiveParser.statement(HiveParser.java:1030)
    at org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:199)
    at org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:166)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:414)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:332)
    at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:988)
    at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1053)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:924)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:914)
    at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:269)
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:221)
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:431)
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:367)
    at org.apache.hadoop.hive.cli.CliDriver.processReader(CliDriver.java:464)
    at org.apache.hadoop.hive.cli.CliDriver.processFile(CliDriver.java:474)
    at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:756)
    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:694)
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:633)
    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.main(RunJar.java:212)
FAILED: ParseException line 3:15 cannot recognize input near 'testdb' 'RENAME' 'TO' in alter database statement

Answer 1

当前的 Apache hive 版本不支持此功能。在这个 apache Hive Jira HIVE-4847 中，您可以看到这是一项新功能，并且该补丁可用，但尚未合并并标记到特定版本。我们可以在以后的任何版本中期待这个功能。