hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Manoj Govindassamy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10908) Improve StripedBlockReader#createBlockReader error logging
Date Fri, 30 Sep 2016 01:45:21 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10908?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Manoj Govindassamy updated HDFS-10908:
--------------------------------------
    Attachment: HDFS-10908.01.patch

Attaching patch to log BlockReader creation errors. 

Since {{BlockReaderRemote#newBlockReader}} throws IOException with information about the offset
issues, logging the IOException should be sufficient to get the reason for BlockReader creation
errors.
{noformat}
      throw new IOException("BlockReader: error in first chunk offset (" +
          firstChunkOffset + ") startOffset is " +
          startOffset + " for file " + file);
{noformat}

> Improve StripedBlockReader#createBlockReader error logging
> ----------------------------------------------------------
>
>                 Key: HDFS-10908
>                 URL: https://issues.apache.org/jira/browse/HDFS-10908
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: erasure-coding
>            Reporter: Wei-Chiu Chuang
>            Assignee: Manoj Govindassamy
>            Priority: Minor
>         Attachments: HDFS-10908.01.patch
>
>
> In {{StripedBlockReader#createBlockReader}} if any IOException is thrown, the error is
logged at debug level and then returns a null. This means in a typical configuration an NPE
may be thrown without logging a cause if the StripedBlockReader object is accessed.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message