I have been using Hive for sometime now on Ubuntu while Hadoop is in Pseudo Distribution mode however today out of nowhere i am getting error while starting Hive shell.I have not made any changes in configuration at all -
Caused by: Meta Exception(message:Could not connect to meta store using any of the URIs provided. Most recent failure: org.apache.thrift.transport.TTransportException: java.net.ConnectException: Connection refused
The hivemetastore service is not running. You can start the service with the command below. This command is for installations made using packages.
service hive-metastore start
For tarball installations, you can start the hive metastore using the below command
hive --service metastore &
Related
I have linux Box with CDAP installed and I configured the Hive import and Export plugins in CDAP.
In the same machine, I have Hadoop with HIVE installed. Am able to start all of the Hadoop services and verified using jps command and create and query the hive tables.
The actual problem is when am trying to connect the hive from cdap. It is unable to connect to hive and it is throwing the below error message.
Connection string: jdbc:hive2://localhost:10000/defaultdb;auth=deligateToken;
Output Directory: /tmp/hive - this directory is already exists
Error:
I tried changing the connection string to
Option1 : Connection string: jdbc:hive2://localhost:10000/defaultdb;auth=deligateToken; - COnnection refused error
Option 2: Connection string: jdbc:hive2:// - unable to instantiate error.
Option 3: Connection string: jdbc:hive2://localhost:10001/defaultdb;auth=deligateToken; - still it is not working
I tried restarting my system, checked whether there is enough space or not and also made sure my hive server2 is running. But I'm getting these errors when given '$hive' in Cloudera.
Logging initialized using configuration in
file:/etc/hive/conf.dist/hive-log4j.properties
WARN: The method class
org.apache.commons.logging.impl.SLF4JLogFactory#release() was invoked.
Exception in thread "main" java.lang.RuntimeException:
org.apache.hadoop.hive.ql.metadata.HiveException:
java.lang.RuntimeException:
org.apache.hadoop.hive.ql.metadata.HiveException:
java.lang.RuntimeException: Unable to instantiate
org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
The process of starting Hive2 is changed, as Hive got deprecated. Usage of Beeline is recommended.
Beeline was developed specifically to interact with the new server. Unlike Hive CLI, which is an Apache Thrift-based client, Beeline is a JDBC client based on the SQLLine CLI — although the JDBC driver used communicates with HiveServer2 using HiveServer2’s Thrift APIs.
As Hive development has shifted from the original Hive server (HiveServer1) to the new server (HiveServer2), users and developers accordingly need to switch to the new client tool. However, there’s more to this process than simply switching the executable name from “hive” to “beeline”.
More information provided over here
Use the below command to enter into interactive mode. Beeline supports same commands that Hive server does. You can execute same script in Beeline without any modifications.
beeline -u jdbc:hive2://
To start the Hive metastore,
sudo service hive-metastore start
I am new to this field. I was checking CDH 5.8 quick-start VM to try some basic hive/impala example.
But I hit an issue, while I am opening HUE it's giving below error. I searched solution for but didnt get anything which can resolve my issue.
Configuration files located in /etc/hue/conf.empty
Potential misconfiguration detected. Fix and restart Hue.
Hive The application won't work without a running HiveServer2.
I checked the and it's up & running. Tried restarting the service & CDH, didnt help.
Hive Server2 is running [ OK ]
When navigated to Hive tried some command it gave me below error.
Could not connect to quickstart.cloudera:10000 (code THRIFTTRANSPORT): TTransportException('Could not connect to quickstart.cloudera:10000',)
FOR Impala I am getting
AnalysisException: This Impala daemon is not ready to accept user requests. Status: Waiting for catalog update from the StateStore.
Tried starting hive --service metastore but got error
[cloudera#quickstart conf.empty]$ hive --service metastore
2017-03-03 05:37:14,502 WARN [main] mapreduce.TableMapReduceUtil: The hbase-prefix-tree module jar containing PrefixTreeCodec is not present. Continuing without it.
Starting Hive Metastore Server
org.apache.thrift.transport.TTransportException: Could not create ServerSocket on address 0.0.0.0/0.0.0.0:9083.
Not sure what is wrong or if I need to change some config. Can you anyone guide me towards the solution ?
You HiveServer2 requires Metastore up and running. Seems your Metastore Server cannot start because the port 9083 is already used by some service. Check it:
netstat -tulpn | grep 9083
If something is using this port you need to either change the port of you metastore in hive configuration or stop the application which already uses this port.
I've installed hortonworks sandbox on Virtual Box. (6092MB of Ram)
I'm following this tutorial.
When I try to execute one simple script
Using arguments: -useHCatalog
Execute on Tez.
I got this error:
java.net.SocketTimeoutException: Read timed out
What can I do?
It sounds like HiveServer is not running. Can you open Ambari (browser - port 8080) and verify that it is running? Ambari can let you restart Hive if it is not.
I have work on Hadoop/Hive. I have installed Hadoop 1.1.2 and Hive 0.10.0.When I use Hive as command prompt then it works fine,but when I am using as it JDBC in Eclipse then gives the below error :
Could not establish connection to localhost:10000/default:
java.net.ConnectException: Connection refused
You can connect to Hive in two modes. Through thrift server and embedded mode.
By seeing your url localhost:10000/default, it looks like you are trying to connect to the thrift sever. So please ensure that you are have started the hive thrift server by the following command.
$ hive --service hiveserver
If you want to connect in embedded mode. you should give the url as
jdbc:hive://
To use the embedded mode you should add the hive/conf and the jars in hive/lib to your classpath.
It is to be noted that, use of the Thrift server is not thread safe as of now.