无法通过brew安装中的derby初始化配置单元

vd8tlhqk  于 2021-06-26  发布在  Hive
关注(0)|答案(2)|浏览(524)

我的理解是 Derby 在当前目录中创建文件。但是那里没有。
所以我试着 hive 初始化使用 Derby :但是。。似乎已经有了一个derby数据库。

schematool --verbose -initSchema -dbType derby

Starting metastore schema initialization to 2.1.0
Initialization script hive-schema-2.1.0.derby.sql
Connecting to jdbc:derby:;databaseName=metastore_db;create=true
Connected to: Apache Derby (version 10.10.2.0 - (1582446))
Driver: Apache Derby Embedded JDBC Driver (version 10.10.2.0 - (1582446))
Transaction isolation: TRANSACTION_READ_COMMITTED
0: jdbc:derby:> !autocommit on
Autocommit status: true
0: jdbc:derby:> CREATE FUNCTION "APP"."NUCLEUS_ASCII" (C CHAR(1)) RETURNS INTEGER LANGUAGE JAVA PARAMETER STYLE JAVA READS SQL DATA CALLED ON NULL INPUT EXTERNAL NAME 'org.datanucleus.store.rdbms.adapter.DerbySQLFunction.ascii'
Error: FUNCTION 'NUCLEUS_ASCII' already exists. (state=X0Y68,code=30000)

Closing: 0: jdbc:derby:;databaseName=metastore_db;create=true
org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !!
Underlying cause: java.io.IOException : Schema script failed, errorcode 2
org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !!
    at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:291)
    at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:264)
    at org.apache.hive.beeline.HiveSchemaTool.main(HiveSchemaTool.java:505)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.io.IOException: Schema script failed, errorcode 2
    at org.apache.hive.beeline.HiveSchemaTool.runBeeLine(HiveSchemaTool.java:390)
    at org.apache.hive.beeline.HiveSchemaTool.runBeeLine(HiveSchemaTool.java:347)
    at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:287)

所以。。它在哪里?
更新我已重新安装配置单元从头开始使用

brew reinstall hive

同样的错误也会发生。
另一个更新给出了此错误的新方向,它现在在另一个问题中得到了回答:
对于一个非os/x的问题(但在其他方面类似)的答案可以在这里找到:
https://stackoverflow.com/a/40017753/1056563

I installed hive with HomeBrew(MacOS) at /usr/local/Cellar/hive and afer running schematool -dbType derby -initSchema I get the following error message:

Starting metastore schema initialization to 2.0.0 Initialization script hive-schema-2.0.0.derby.sql Error: FUNCTION 'NUCLEUS_ASCII' already exists. (state=X0Y68,code=30000) org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !!

However, I can't find either metastore_db or metastore_db.tmp folder under install path, so I tried:

find /usr/ -name hive-schema-2.0.0.derby.sql
vi /usr/local/Cellar/hive/2.0.1/libexec/scripts/metastore/upgrade/derby/hive-schema-2.0.0.derby.sql
comment the 'NUCLEUS_ASCII' function and 'NUCLEUS_MATCHES' function
rerun schematool -dbType derby -initSchema, then everything goes well!
jhdbpxl9

jhdbpxl91#

您可能需要查看配置单元配置文件。它应该告诉您在哪里初始化它。

kmpatx3s

kmpatx3s2#

homebrew安装未配置的配置单元(版本2.3.1)。默认设置是使用进程内derby数据库(hive已经包含了所需的lib)。
你唯一要做的事就是 brew install hive )是初始化数据库:

schematool -initSchema -dbType derby

然后你就可以跑了 hive ,它会起作用的。但是,如果你想跑 hive 在初始化数据库之前,配置单元实际上会创建一个不完整的数据库,并且将无法工作:

show tables;
FAILED: SemanticException org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient

因为数据库是半创建的, schematool 现在也将失败:

Error: FUNCTION 'NUCLEUS_ASCII' already exists. (state=X0Y68,code=30000)
org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !!

要解决此问题,必须删除数据库:

rm -Rf metastore_db

然后再次运行初始化命令。
注意到我从当前目录中删除了metastore\u db吗?这是另一个问题:配置单元被配置为在当前工作目录中创建和使用derby数据库。这是因为它具有以下“javax.jdo.option.connectionurl”的默认值:

jdbc:derby:;databaseName=metastore_db;create=true

要解决这个问题,请创建文件 /usr/local/opt/hive/libexec/conf/hive-site.xml 作为

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>
  <property>
    <name>javax.jdo.option.ConnectionURL</name>
    <value>jdbc:derby:/usr/local/var/hive/metastore_db;create=true</value>
  </property>
</configuration>

像以前一样重新创建数据库。现在数据库在 /usr/local/var/hive ,以防你再次意外跑掉 hive 在初始化数据库之前,请使用以下命令将其删除:

rm -Rf /usr/local/var/hive

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