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Posted to dev@pig.apache.org by "Rohini Palaniswamy (JIRA)" <ji...@apache.org> on 2015/10/20 22:45:27 UTC
[jira] [Commented] (PIG-3251) Bzip2TextInputFormat requires double
the memory of maximum record size
[ https://issues.apache.org/jira/browse/PIG-3251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14965715#comment-14965715 ]
Rohini Palaniswamy commented on PIG-3251:
-----------------------------------------
- Can you change the name of the constant as well to PIG_BZIP_USE_HADOOP_INPUTFORMAT?
{code}
public static final String PIG_BZIPINPUT_USEHADOOPS = "pig.bzip.use.hadoop.inputformat";
{code}
- Equals sign is missing before false
{code}
+ 'num' => 3,
+ 'java_params' => ['-Dppig.bzip.use.hadoop.inputformatfalse'],
{code}
> Bzip2TextInputFormat requires double the memory of maximum record size
> ----------------------------------------------------------------------
>
> Key: PIG-3251
> URL: https://issues.apache.org/jira/browse/PIG-3251
> Project: Pig
> Issue Type: Improvement
> Reporter: Koji Noguchi
> Assignee: Koji Noguchi
> Priority: Minor
> Fix For: 0.16.0
>
> Attachments: pig-3251-trunk-v01.patch, pig-3251-trunk-v02.patch, pig-3251-trunk-v03.patch, pig-3251-trunk-v04.patch, pig-3251-trunk-v05.patch, pig-3251-trunk-v06.patch, pig-3251-trunk-v07.patch
>
>
> While looking at user's OOM heap dump, noticed that pig's Bzip2TextInputFormat consumes memory at both
> Bzip2TextInputFormat.buffer (ByteArrayOutputStream)
> and actual Text that is returned as line.
> For example, when having one record with 160MBytes, buffer was 268MBytes and Text was 160MBytes.
> We can probably eliminate one of them.
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