Rahul Challapalli created DRILL-1652:
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Summary: flatten causing the sqlline to hang indefinitely when
dealing with 0.1 GB data
Key: DRILL-1652
URL: https://issues.apache.org/jira/browse/DRILL-1652
Project: Apache Drill
Issue Type: Bug
Components: Functions - Drill, Storage - JSON
Reporter: Rahul Challapalli
git.commit.id.abbrev=60aa446
I ran the below test against the private branch of Jason which has some patches
for bugs related to flatten which are not yet merged into the master.
I used the below json record and copied it over 100000 times
{code}
{
"uid" : 1,
"events" : [
{ "evnt_id":"e1", "campaign_id":"c1", "event_name":"e1_name",
"event_time":1000000},
{ "evnt_id":"e2", "campaign_id":"c1", "event_name":"e2_name",
"event_time":2000000},
{ "evnt_id":"e3", "campaign_id":"c1", "event_name":"e3_name",
"event_time":3000000},
{ "evnt_id":"e4", "campaign_id":"c1", "event_name":"e4_name",
"event_time":4000000},
{ "evnt_id":"e5", "campaign_id":"c2", "event_name":"e5_name",
"event_time":5000000},
{ "evnt_id":"e6", "campaign_id":"c1", "event_name":"e6_name",
"event_time":6000000},
{ "evnt_id":"e7", "campaign_id":"c1", "event_name":"e7_name",
"event_time":7000000},
{ "evnt_id":"e8", "campaign_id":"c2", "event_name":"e8_name",
"event_time":8000000},
{ "evnt_id":"e9", "campaign_id":"c2", "event_name":"e9_name",
"event_time":9000000}
],
"transactions" : [
{ "trans_id":"t1", "amount":100, "trans_time":7777777},
{ "trans_id":"t2", "amount":100, "trans_time":8888888}
]
}
{code}
The below query which applies a flatten function hangs after returning a few
thousand records
{code}
select uid, flatten(transactions) from `json_kvgenflatten/transactions.json`;
{code}
Select * from the file also fails after displaying a bunch of records
{code}
select * from `json_kvgenflatten/transactions.json`;
{code}
The below query works
{code}
select uid from `json_kvgenflatten/transactions.json`;
{code}
I attached the error logs for the 2 failing queries
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