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From Tamas Jambor <jambo...@gmail.com>
Subject Re: store hive metastore on persistent store
Date Sat, 16 May 2015 12:13:15 GMT
Thank you for the reply.

I have tried your experiment, it seems that it does not print the settings
out in spark-shell (I'm using 1.3 by the way).

Strangely I have been experimenting with an SQL connection instead, which
works after all (still if I go to spark-shell and try to print out the SQL
settings that I put in hive-site.xml, it does not print them).


On Fri, May 15, 2015 at 7:22 PM, Yana Kadiyska <yana.kadiyska@gmail.com>
wrote:

> My point was more to how to verify that properties are picked up from
> the hive-site.xml file. You don't really need hive.metastore.uris if
> you're not running against an external metastore.  I just did an
> experiment with warehouse.dir.
>
> My hive-site.xml looks like this:
>
> <configuration>
>     <property>
>         <name>hive.metastore.warehouse.dir</name>
>         <value>/home/ykadiysk/Github/warehouse_dir</value>
>         <description>location of default database for the warehouse</description>
>     </property>
> </configuration>
>
> ​
>
> and spark-shell code:
>
> scala> val hc= new org.apache.spark.sql.hive.HiveContext(sc)
> hc: org.apache.spark.sql.hive.HiveContext = org.apache.spark.sql.hive.HiveContext@3036c16f
>
> scala> hc.sql("show tables").collect
> 15/05/15 14:12:57 INFO HiveMetaStore: 0: Opening raw store with implemenation class:org.apache.hadoop.hive.metastore.ObjectStore
> 15/05/15 14:12:57 INFO ObjectStore: ObjectStore, initialize called
> 15/05/15 14:12:57 INFO Persistence: Property datanucleus.cache.level2 unknown - will
be ignored
> 15/05/15 14:12:58 WARN Connection: BoneCP specified but not present in CLASSPATH (or
one of dependencies)
> 15/05/15 14:12:58 WARN Connection: BoneCP specified but not present in CLASSPATH (or
one of dependencies)
> 15/05/15 14:13:03 INFO ObjectStore: Setting MetaStore object pin classes with hive.metastore.cache.pinobjtypes="Table,StorageDescriptor,SerDeInfo,Partition,Database,Type,FieldSchema,Order"
> 15/05/15 14:13:03 INFO ObjectStore: Initialized ObjectStore
> 15/05/15 14:13:04 WARN ObjectStore: Version information not found in metastore. hive.metastore.schema.verification
is not enabled so recording the schema version 0.12.0-protobuf-2.5
> 15/05/15 14:13:05 INFO HiveMetaStore: 0: get_tables: db=default pat=.*
> 15/05/15 14:13:05 INFO audit: ugi=ykadiysk      ip=unknown-ip-addr      cmd=get_tables:
db=default pat=.*
> 15/05/15 14:13:05 INFO Datastore: The class "org.apache.hadoop.hive.metastore.model.MFieldSchema"
is tagged as "embedded-only" so does not have its own datastore table.
> 15/05/15 14:13:05 INFO Datastore: The class "org.apache.hadoop.hive.metastore.model.MOrder"
is tagged as "embedded-only" so does not have its own datastore table.
> res0: Array[org.apache.spark.sql.Row] = Array()
>
> scala> hc.getConf("hive.metastore.warehouse.dir")
> res1: String = /home/ykadiysk/Github/warehouse_dir
>
> ​
>
> I have not tried an HDFS path but you should be at least able to verify
> that the variable is being read. It might be that your value is read but is
> otherwise not liked...
>
> On Fri, May 15, 2015 at 2:03 PM, Tamas Jambor <jamborta@gmail.com> wrote:
>
>> thanks for the reply. I am trying to use it without hive setup
>> (spark-standalone), so it prints something like this:
>>
>> hive_ctx.sql("show tables").collect()
>> 15/05/15 17:59:03 INFO HiveMetaStore: 0: Opening raw store with
>> implemenation class:org.apache.hadoop.hive.metastore.ObjectStore
>> 15/05/15 17:59:03 INFO ObjectStore: ObjectStore, initialize called
>> 15/05/15 17:59:04 INFO Persistence: Property datanucleus.cache.level2
>> unknown - will be ignored
>> 15/05/15 17:59:04 INFO Persistence: Property
>> hive.metastore.integral.jdo.pushdown unknown - will be ignored
>> 15/05/15 17:59:04 WARN Connection: BoneCP specified but not present in
>> CLASSPATH (or one of dependencies)
>> 15/05/15 17:59:05 WARN Connection: BoneCP specified but not present in
>> CLASSPATH (or one of dependencies)
>> 15/05/15 17:59:08 INFO BlockManagerMasterActor: Registering block manager
>> xxxx:42819 with 3.0 GB RAM, BlockManagerId(2, xxx, 42819)
>>
>> [0/1844]
>> 15/05/15 17:59:18 INFO ObjectStore: Setting MetaStore object pin classes
>> with
>> hive.metastore.cache.pinobjtypes="Table,StorageDescriptor,SerDeInfo,Partition,Database,Type,FieldSchema,Order"
>> 15/05/15 17:59:18 INFO MetaStoreDirectSql: MySQL check failed, assuming
>> we are not on mysql: Lexical error at line 1, column 5.  Encountered: "@"
>> (64), after : "".
>> 15/05/15 17:59:20 INFO Datastore: The class
>> "org.apache.hadoop.hive.metastore.model.MFieldSchema" is tagged as
>> "embedded-only" so does not have its own datastore table.
>> 15/05/15 17:59:20 INFO Datastore: The class
>> "org.apache.hadoop.hive.metastore.model.MOrder" is tagged as
>> "embedded-only" so does not have its own datastore table.
>> 15/05/15 17:59:28 INFO Datastore: The class
>> "org.apache.hadoop.hive.metastore.model.MFieldSchema" is tagged as
>> "embedded-only" so does not have its own datastore table.
>> 15/05/15 17:59:29 INFO Datastore: The class
>> "org.apache.hadoop.hive.metastore.model.MOrder" is tagged as
>> "embedded-only" so does not have its own datastore table.
>> 15/05/15 17:59:31 INFO ObjectStore: Initialized ObjectStore
>> 15/05/15 17:59:32 WARN ObjectStore: Version information not found in
>> metastore. hive.metastore.schema.verification is not enabled so recording
>> the schema version 0.13.1aa
>> 15/05/15 17:59:33 WARN MetricsConfig: Cannot locate configuration: tried
>> hadoop-metrics2-azure-file-system.properties,hadoop-metrics2.properties
>> 15/05/15 17:59:33 INFO MetricsSystemImpl: Scheduled snapshot period at 10
>> second(s).
>> 15/05/15 17:59:33 INFO MetricsSystemImpl: azure-file-system metrics
>> system started
>> 15/05/15 17:59:33 INFO HiveMetaStore: Added admin role in metastore
>> 15/05/15 17:59:34 INFO HiveMetaStore: Added public role in metastore
>> 15/05/15 17:59:34 INFO HiveMetaStore: No user is added in admin role,
>> since config is empty
>> 15/05/15 17:59:35 INFO SessionState: No Tez session required at this
>> point. hive.execution.engine=mr.
>> 15/05/15 17:59:37 INFO HiveMetaStore: 0: get_tables: db=default pat=.*
>> 15/05/15 17:59:37 INFO audit: ugi=testuser     ip=unknown-ip-addr
>>  cmd=get_tables: db=default pat=.*
>>
>> not sure what to put in hive.metastore.uris in this case?
>>
>>
>> On Fri, May 15, 2015 at 2:52 PM, Yana Kadiyska <yana.kadiyska@gmail.com>
>> wrote:
>>
>>> This should work. Which version of Spark are you using? Here is what I
>>> do -- make sure hive-site.xml is in the conf directory of the machine
>>> you're using the driver from. Now let's run spark-shell from that machine:
>>>
>>> scala> val hc= new org.apache.spark.sql.hive.HiveContext(sc)
>>> hc: org.apache.spark.sql.hive.HiveContext = org.apache.spark.sql.hive.HiveContext@6e9f8f26
>>>
>>> scala> hc.sql("show tables").collect
>>> 15/05/15 09:34:17 INFO metastore: Trying to connect to metastore with URI thrift://hostname.com:9083
             <-- here should be a value from your hive-site.xml
>>> 15/05/15 09:34:17 INFO metastore: Waiting 1 seconds before next connection attempt.
>>> 15/05/15 09:34:18 INFO metastore: Connected to metastore.
>>> res0: Array[org.apache.spark.sql.Row] = Array([table1,false],
>>>
>>> scala> hc.getConf("hive.metastore.uris")
>>> res13: String = thrift://hostname.com:9083
>>>
>>> scala> hc.getConf("hive.metastore.warehouse.dir")
>>> res14: String = /user/hive/warehouse
>>>
>>> ​
>>>
>>> The first line tells you which metastore it's trying to connect to --
>>> this should be the string specified under hive.metastore.uris property in
>>> your hive-site.xml file. I have not mucked with warehouse.dir too much but
>>> I know that the value of the metastore URI is in fact picked up from there
>>> as I regularly point to different systems...
>>>
>>>
>>> On Thu, May 14, 2015 at 6:26 PM, Tamas Jambor <jamborta@gmail.com>
>>> wrote:
>>>
>>>> I have tried to put the hive-site.xml file in the conf/ directory
>>>> with, seems it is not picking up from there.
>>>>
>>>>
>>>> On Thu, May 14, 2015 at 6:50 PM, Michael Armbrust <
>>>> michael@databricks.com> wrote:
>>>>
>>>>> You can configure Spark SQLs hive interaction by placing a
>>>>> hive-site.xml file in the conf/ directory.
>>>>>
>>>>> On Thu, May 14, 2015 at 10:24 AM, jamborta <jamborta@gmail.com>
wrote:
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> is it possible to set hive.metastore.warehouse.dir, that is internally
>>>>>> create by spark, to be stored externally (e.g. s3 on aws or wasb
on
>>>>>> azure)?
>>>>>>
>>>>>> thanks,
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> View this message in context:
>>>>>> http://apache-spark-user-list.1001560.n3.nabble.com/store-hive-metastore-on-persistent-store-tp22891.html
>>>>>> Sent from the Apache Spark User List mailing list archive at
>>>>>> Nabble.com.
>>>>>>
>>>>>> ---------------------------------------------------------------------
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>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>

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