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Date: Thu, 14 Dec 2017 18:33:00 +0000 (UTC)
From: "Ajay Kumar (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.13122201.1512143526000.461706.1513276380773@Atlassian.JIRA>
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Subject: [jira] [Updated] (HDFS-12881) Output streams closed with IOUtils
 suppressing write errors
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archived-at: Thu, 14 Dec 2017 18:33:06 -0000


     [ https://issues.apache.org/jira/browse/HDFS-12881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ajay Kumar updated HDFS-12881:
------------------------------
    Attachment: HDFS-12881-branch-2.10.0.001.patch

> Output streams closed with IOUtils suppressing write errors
> -----------------------------------------------------------
>
>                 Key: HDFS-12881
>                 URL: https://issues.apache.org/jira/browse/HDFS-12881
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Jason Lowe
>            Assignee: Ajay Kumar
>             Fix For: 3.1.0, 3.0.1
>
>         Attachments: HDFS-12881-branch-2.10.0.001.patch, HDFS-12881.001.patch, HDFS-12881.002.patch, HDFS-12881.003.patch, HDFS-12881.004.patch
>
>
> There are a few places in HDFS code that are closing an output stream with IOUtils.cleanupWithLogger like this:
> {code}
>   try {
>     ...write to outStream...
>   } finally {
>     IOUtils.cleanupWithLogger(LOG, outStream);
>   }
> {code}
> This suppresses any IOException that occurs during the close() method which could lead to partial/corrupted output without throwing a corresponding exception.  The code should either use try-with-resources or explicitly close the stream within the try block so the exception thrown during close() is properly propagated as exceptions during write operations are.


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