Rahul Challapalli created DRILL-5396: ----------------------------------------
Summary: A flatten query on top of 2 files with one record each causes oversize allocation error randomly Key: DRILL-5396 URL: https://issues.apache.org/jira/browse/DRILL-5396 Project: Apache Drill Issue Type: Bug Components: Execution - Data Types, Storage - JSON Reporter: Rahul Challapalli As part of verifying DRILL-3562, I came up with the below 2 files File 1: {code} { "a": { "b": { "c": [] } } } {code} File 2: {code} { "a": { "b": { "c": [1] } } } {code} Now the below query work on individual files, however when I run the query on a directory containing both the files, I randomly hit the below error {code} select FLATTEN(t.a.b.c) AS c from dfs.`/drill/testdata/json_kvgenflatten/drill3562` t; Error: SYSTEM ERROR: OversizedAllocationException: Unable to expand the buffer. Max allowed buffer size is reached. Fragment 0:0 [Error Id: e556243b-7ad6-4131-81f7-e8b225c9c8bc on qa-node182.qa.lab:31010] (state=,code=0) {code} This could be related to the fix for DRILL-3562 -- This message was sent by Atlassian JIRA (v6.3.15#6346)