解决Hive installation issues: Hive metastore database is not initialized

I tried to install hive on a raspberry pi 2. I installed Hive by uncompress zipped Hive package and configure $HADOOP_HOME and $HIVE_HOME manually under hduser user-group I created. When running hive, I got the following error message: hiveERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.Exception in thread "main" java.lang.RuntimeException: Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType ...) to create the schema. If needed, don't forget to include the option to auto-create the underlyingdatabase in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for MySQL)So I ran the command suggested in the above error message: schematool -dbType derby -initSchema I got the error message:Error: FUNCTION 'NUCLEUS_ASCII' already exists. (state=X0Y68,code=30000) org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !! * schemaToolfailed *It seems there aren't any helpful information when I try to google this error online. Any help or any explanation on how Hive works with Derby would be appreciated!answer：After installing hive, if the first thing you did was run hive, hive attempted to create/initialize the metastore_db, but apparently might not get it right. On that initial run, maybe you saw your error:

Exception in thread "main" java.lang.RuntimeException: Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType ...) to create the schema. If needed, don't forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql)

Running hive, even though it fails, creates a metastore_db directory in the directory from which you ran hive:

ubuntu15-laptop: ~ $>ls -l |grep meta
drwxrwxr-x 5 testuser testuser 4096 Apr 14 12:44 metastore_db

So when you then tried running

ubuntu15-laptop: ~ $>schematool -initSchema -dbType derby（或者mysql）

The metastore already existed, but not in complete form.Soooooo the answer is:Before you run hive for the first time, runschematool -initSchema -dbType derby（或者mysql）

If you already ran hive and then tried to initSchema and it's failing:mv metastore_db metastore_db.tmpRe runschematool -initSchema -dbType derby（或者mysql）Run hive again**Also of note: if you change directories, the metastore_db created above won't be found! I'm sure there's a good reason for this that I don't know yet because I'm literally trying to use hive for the first time today. Ahhh here's information on this: metastore_dbcreated wherever I run Hive