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From "Ankit Singhal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-2169) Illegal data error on UPSERT SELECT and JOIN with salted tables
Date Thu, 04 Feb 2016 14:20:39 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-2169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ankit Singhal updated PHOENIX-2169:
-----------------------------------
    Attachment: PHOENIX-2169_v2.patch

> Illegal data error on UPSERT SELECT and JOIN with salted tables
> ---------------------------------------------------------------
>
>                 Key: PHOENIX-2169
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2169
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.5.0
>            Reporter: Josh Mahonin
>            Assignee: Ankit Singhal
>              Labels: verify
>             Fix For: 4.7.0
>
>         Attachments: PHOENIX-2169-bug.patch, PHOENIX-2169.patch, PHOENIX-2169_v2.patch
>
>
> I have an issue where I get periodic failures (~50%) for an UPSERT SELECT query involving
a JOIN on salted tables. Unfortunately I haven't been able to create a reproducible test case
yet, though I'll keep trying. I believe this same behaviour existed in 4.3.1 as well, so I
don't think it's a regression.
> The upsert query itself looks something like this:
> {code}
> UPSERT INTO a(tid, ds, etp, eid, ts, atp, rel, tp, tpid, dt, pro) 
> SELECT c.tid, 
>        c.ds, 
>        c.etp, 
>        c.eid, 
>        c.dh, 
>        0, 
>        c.rel, 
>        c.tp, 
>        c.tpid, 
>        current_time(), 
>        1.0 / s.th 
> FROM   e_c c 
> join   e_s s 
> ON     s.tid = c.tid 
> AND    s.ds = c.ds 
> AND    s.etp = c.etp 
> AND    s.eid = c.eid 
> WHERE  c.tid = 'FOO';
> {code}
> Without the upsert, the query always returns the right data, but with the upsert, it
ends up with failures like:
> Error: ERROR 201 (22000): Illegal data. ERROR 201 (22000): Illegal data. Expected length
of at least 109 bytes, but had 19 (state=22000,code=201)
> The explain plan looks like:
> {code}
> UPSERT SELECT
> CLIENT 16-CHUNK PARALLEL 16-WAY RANGE SCAN OVER E_C [0,'FOO']
>       SERVER FILTER BY FIRST KEY ONLY
>       PARALLEL INNER-JOIN TABLE 0
>           CLIENT 16-CHUNK PARALLEL 16-WAY FULL SCAN OVER E_S
>       DYNAMIC SERVER FILTER BY (C.TID, C.DS, C.ETP, C.EID) IN ((S.TID, S.DS, S.ETP, S.EID))
> {code}
> I'm using SALT_BUCKETS=16 for both tables in the join, and this is a dev environment,
so only 1 region server. Note that without salted tables, I have no issue with this query.
> The number of rows in E_C is around 23K, and the number of rows in E_S is 62.



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