[jira] [Created] (DRILL-8372) Unfreed buffers when running a LIMIT 0 query over delimited text

["James Turton (Jira)" <ji...@apache.org>]

James Turton created DRILL-8372:
-----------------------------------

             Summary: Unfreed buffers when running a LIMIT 0 query over delimited text
                 Key: DRILL-8372
                 URL: https://issues.apache.org/jira/browse/DRILL-8372
             Project: Apache Drill
          Issue Type: Bug
          Components: Storage - Text & CSV
    Affects Versions: 2.0.0
            Reporter: James Turton
            Assignee: James Turton
             Fix For: 2.0.0


With the following data layout

 
{code:java}
/tmp/foo/bar:
large_csv.csvh
/tmp/foo/boo:
large_csv.csvh
{code}
a LIMIT 0 query over it results in unfreed buffer errors.
{code:java}
apache drill (dfs.tmp)> select * from `foo` limit 0;
Error: SYSTEM ERROR: IllegalStateException: Allocator[op:0:0:4:EasySubScan] closed with outstanding buffers allocated (3).
Allocator(op:0:0:4:EasySubScan) 1000000/299008/3182592/10000000000 (res/actual/peak/limit)
  child allocators: 0
  ledgers: 3
    ledger[113] allocator: op:0:0:4:EasySubScan), isOwning: true, size: 262144, references: 1, life: 277785186322881..0, allocatorManager: [109, life: 277785186258906..0] holds 1 buffers.
        DrillBuf[142], udle: [110 0..262144]
    ledger[114] allocator: op:0:0:4:EasySubScan), isOwning: true, size: 32768, references: 1, life: 277785186463824..0, allocatorManager: [110, life: 277785186414654..0] holds 1 buffers.
        DrillBuf[143], udle: [111 0..32768]
    ledger[112] allocator: op:0:0:4:EasySubScan), isOwning: true, size: 4096, references: 1, life: 277785186046095..0, allocatorManager: [108, life: 277785185921147..0] holds 1 buffers.
        DrillBuf[141], udle: [109 0..4096]
  reservations: 0 {code}
 



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