Vitaly Brodetskyi created AMBARI-11837:
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Summary: Simple insert takes up 6 slots with tez:
mapreduce.input.fileinputformat.split.minsize=1 should be changed
Key: AMBARI-11837
URL: https://issues.apache.org/jira/browse/AMBARI-11837
Project: Ambari
Issue Type: Bug
Components: ambari-server
Reporter: Vitaly Brodetskyi
Assignee: Vitaly Brodetskyi
Priority: Critical
Fix For: 2.1.0
{noformat}
create table test (f1 int, f2 int);
insert into table test values (10,10);
{noformat}
This ends up creating 6 containers (HiveInput creates 6 splits) in hive1 queue
in cn041 cluster. Accidentally one could use couple of JDBC programs to use up
all available slots with simple inserts.
Appears that "mapreduce.input.fileinputformat.split.minsize" is set to 1.
Setting it to a higher value
"mapreduce.input.fileinputformat.split.minsize=1000000" fixes the problem and
launches 1 container.
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