You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@drill.apache.org by "Kunal Khatua (JIRA)" <ji...@apache.org> on 2017/03/21 00:44:41 UTC
[jira] [Updated] (DRILL-5015) As per documentation, when issuing a
list of drillbits in the connection string, we always attempt to connect
only to the first one
[ https://issues.apache.org/jira/browse/DRILL-5015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kunal Khatua updated DRILL-5015:
--------------------------------
Reviewer: Khurram Faraaz
[~khfaraaz] Can you please verify and close this?
> As per documentation, when issuing a list of drillbits in the connection string, we always attempt to connect only to the first one
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: DRILL-5015
> URL: https://issues.apache.org/jira/browse/DRILL-5015
> Project: Apache Drill
> Issue Type: Bug
> Components: Client - JDBC
> Affects Versions: 1.8.0, 1.9.0
> Reporter: Sorabh Hamirwasia
> Assignee: Sudheesh Katkam
> Labels: ready-to-commit
> Fix For: 1.10.0
>
>
> When trying to connect to a Drill cluster by specifying more than 1 drillbits to connect to, we always attempt to connect to only the first drillbit.
> As an example, we tested against a pair of drillbits, but we always connect to the first entry in the CSV list by querying for the 'current' drillbit. The remaining entries are never attempted.
> [root@pssc-60 agileSqlPerfTests]# /opt/mapr/drill/drill-1.8.0/bin/sqlline -u "jdbc:drill:schema=dfs.tmp;drillbit=pssc-61:31010,pssc-62:31010" -f whereAmI.q | grep -v logback
> 1/1 select * from sys.drillbits where `current`;
> +-----------------+------------+---------------+------------+----------+
> | hostname | user_port | control_port | data_port | current |
> +-----------------+------------+---------------+------------+----------+
> | pssc-61.qa.lab | 31010 | 31011 | 31012 | true |
> +-----------------+------------+---------------+------------+----------+
> 1 row selected (0.265 seconds)
> Closing: org.apache.drill.jdbc.impl.DrillConnectionImpl
> apache drill 1.8.0
> "a little sql for your nosql"
> This property is meant for use by clients when not wanting to overload the ZK for fetching a list of existing Drillbits, but the behaviour doesn't match the documentation.
> [Making a Direct Drillbit Connection | https://drill.apache.org/docs/using-the-jdbc-driver/#using-the-jdbc-url-format-for-a-direct-drillbit-connection ]
> We need to randomly shuffle between this list and If an entry in the shuffled list is unreachable, we need to try for the next entry in the list.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)