[PARQUET-1533] TestSnappy() throws OOM exception with Parquet-1485 change

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.11.0
• Fix Version/s: 1.11.0
• Component/s: parquet-mr
• Labels: pull-request-available

Environment

Mac OS 10.14.1

• Assignee: Gabor Szadovszky
• Reporter: Xinli Shang
• Created: 18/Feb/19 19:57
• Updated: 13/Nov/19 12:18
• Resolved: 25/Feb/19 12:26

Description

Parquet-1485 initialize the buffer size(inputBuffer and outputBuffer) from 0 to 128M in total. This cause the unit test TestSnappy() failed with OOM exception. This is on my Mac laptop. 

To solve the unit test failure, we can increase the size of -Xmx from 512m to 1024m like below. However, we need to evaluate whether or not the increase of the initial size of direct memory usage for inputBuffer and outputBuffer will cause real Parquet application OOM or not, if that application is not with big enough -Xmx size. 

<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
...
<argLine>-Xmx1014m</argLine>

...

For details of the exception, the commit page (https://github.com/apache/parquet-mr/commit/7dcdcdcf0eb5e91618c443d4a84973bf7883d79b) has the detail. 

Issue Links

• relates to: PARQUET-1485 Snappy Decompressor/Compressor may cause direct memory leak
• links to: GitHub Pull Request #622