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Find A Deadlock Blocking Query In Redshift

TODO: Pull subtitle into page object

NOTE: There are two of theses files, need to figure out which is which:

find-a-deadlock-blocking-query-in-redshift find-a-deadlock-blocking-query-in-redshift-tmp

Run this to find deadlocks in Redshift:

code_start_default_section code_end_default_section

Debugging Stuff

I'm moving stuff around right now. All this below is helping me figure out where to put stuff

        -- title

Find A Deadlock Blocking Query In Redshift

-- p

NOTE: There are two of theses files, need to figure out which is which:

-- p

find-a-deadlock-blocking-query-in-redshift
find-a-deadlock-blocking-query-in-redshift-tmp

-- p

Run this to find deadlocks in Redshift:

-- code/
-- sql{numberLines: true}

select a.txn_owner, a.txn_db, a.xid, a.pid, a.txn_start, 
    a.lock_mode, a.relation as table_id,
    nvl(trim(c."name"),d.relname) as tablename, 
    a.granted,b.pid as blocking_pid,
    datediff(s,a.txn_start,getdate())/86400||' days '||
    datediff(s,a.txn_start,getdate())%86400/3600||
    ' hrs '||datediff(s,a.txn_start,getdate())%3600/60||
    ' mins '||datediff(s,a.txn_start,getdate())%60||
    ' secs' as txn_duration
from svv_transactions a 
left join (select pid,relation,granted from 
    pg_locks group by 1,2,3) b 
on a.relation=b.relation and a.granted='f' and b.granted='t' 
left join (select * from stv_tbl_perm where slice=0) c 
on a.relation=c.id 
left join pg_class d on a.relation=d.oid
where  a.relation is not null;

-- /code

-- p

If you find one, kill it with:

-- code/
-- sql{numberLines: true}

select pg_terminate_backend(###);

-- /code


-- categories
-- Redshift

-- metadata
-- date: 2021-02-09 00:00:00
-- id: 20enu8vz
-- status: published
-- type: post
-- SCRUBBED_NEO: false
-- site: aws