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From "slim bouguerra (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HIVE-17523) Insert into druid table hangs Hive server2 in an infinit loop
Date Wed, 13 Sep 2017 01:15:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

slim bouguerra reassigned HIVE-17523:
-------------------------------------

    Assignee: Nishant Bangarwa

> Insert into druid table  hangs Hive server2 in an infinit loop
> --------------------------------------------------------------
>
>                 Key: HIVE-17523
>                 URL: https://issues.apache.org/jira/browse/HIVE-17523
>             Project: Hive
>          Issue Type: Bug
>          Components: Druid integration
>            Reporter: slim bouguerra
>            Assignee: Nishant Bangarwa
>         Attachments: HIVE-17523.patch
>
>
> Inserting data via insert into table backed by druid can lead to a Hive server hang.
> This is due to some bug in the naming of druid segments partitions.
> To reproduce the issue 
> {code}
> drop table login_hive;
> create table login_hive(`timecolumn` timestamp, `userid` string, `num_l` double);
> insert into login_hive values ('2015-01-01 00:00:00', 'user1', 5);
> insert into login_hive values ('2015-01-01 01:00:00', 'user2', 4);
> insert into login_hive values ('2015-01-01 02:00:00', 'user3', 2);
> insert into login_hive values ('2015-01-02 00:00:00', 'user1', 1);
> insert into login_hive values ('2015-01-02 01:00:00', 'user2', 2);
> insert into login_hive values ('2015-01-02 02:00:00', 'user3', 8);
> insert into login_hive values ('2015-01-03 00:00:00', 'user1', 5);
> insert into login_hive values ('2015-01-03 01:00:00', 'user2', 9);
> insert into login_hive values ('2015-01-03 04:00:00', 'user3', 2);
> insert into login_hive values ('2015-03-09 00:00:00', 'user3', 5);
> insert into login_hive values ('2015-03-09 01:00:00', 'user1', 0);
> insert into login_hive values ('2015-03-09 05:00:00', 'user2', 0);
> drop table login_druid;
> CREATE TABLE login_druid
> STORED BY 'org.apache.hadoop.hive.druid.DruidStorageHandler'
> TBLPROPERTIES ("druid.datasource" = "druid_login_test_tmp", "druid.segment.granularity"
= "DAY", "druid.query.granularity" = "HOUR")
> AS
> select `timecolumn` as `__time`, `userid`, `num_l` FROM login_hive;
> select * FROM login_druid;
> insert into login_druid values ('2015-03-09 05:00:00', 'user4', 0); 
> {code}
> This patch unifies the logic of pushing and segments naming by using Druid data segment
pusher as much as possible.
> This patch also has some minor code refactoring and test enhancements.
>  



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