[ https://issues.apache.org/jira/browse/HADOOP-4616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pete Wyckoff updated HADOOP-4616:
---------------------------------
Status: Open (was: Patch Available)
> assertion makes fuse-dfs exit when reading incomplete data
> ----------------------------------------------------------
>
> Key: HADOOP-4616
> URL: https://issues.apache.org/jira/browse/HADOOP-4616
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/fuse-dfs
> Affects Versions: 0.18.2
> Reporter: Marc-Olivier Fleury
> Assignee: Pete Wyckoff
> Priority: Blocker
> Fix For: 0.18.3, 0.19.1, 0.20.0
>
> Attachments: HADOOP-4616.txt, HADOOP-4616.txt, HADOOP-4616.txt, HADOOP-4616_0.18.2.txt,
HADOOP-4616_0.18.2.txt, HADOOP-4616_0.19.txt
>
>
> When trying to read a file that is corrupt on HDFS (registered by the namenode, but part
of the data is missing on the datanodes), some of the assertions in dfs_read fail, causing
the program to abort. This makes it impossible to access the mounted partition until it is
mounted again.
> A simple way to reproduce this bug is to remove enough datanodes to have part of the
data missing, and to read each file listed in HDFS.
> this is the assertion that fails (fuse_dfs.c:903) : assert(bufferReadIndex >= 0 &&
bufferReadIndex < fh->bufferSize);
> The expected behaviour would be to return either no file or a corrupt file, but continue
working afterward.
> removing the assertion seems to work for now, but a special behaviour is probably needed
to handle this particular problem correctly.
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