David Dobbins created HADOOP-10135:
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Summary: writes to swift fs over partition size leave temp files
and empty output file
Key: HADOOP-10135
URL: https://issues.apache.org/jira/browse/HADOOP-10135
Project: Hadoop Common
Issue Type: Bug
Components: fs
Affects Versions: 3.0.0
Reporter: David Dobbins
The OpenStack/swift filesystem produces incorrect output when the written
objects exceed the configured partition size. After job completion, the
expected files in the swift container have length == 0 and a collection of
temporary files remain with names that appear to be URLs.
This can be replicated with teragen against the minicluster using the following
command line:
bin/hadoop jar
./share/hadoop/mapreduce/hadoop-mapreduce-examples-3.0.0-SNAPSHOT.jar teragen
100000 swift://mycontainer.myservice/teradata
Where core-site.xml contains:
<property>
<name>fs.swift.impl</name>
<value>org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystem</value>
</property>
<property>
<name>fs.swift.service.myservice.auth.url</name>
<value>https://auth.api.rackspacecloud.com/v2.0/tokens</value>
</property>
<property>
<name>fs.swift.service.myservice.username</name>
<value>[[your-cloud-username]]</value>
</property>
<property>
<name>fs.swift.service.myservice.region</name>
<value>DFW</value>
</property>
<property>
<name>fs.swift.service.myservice.apikey</name>
<value>[[your-api-key]]</value>
</property>
<property>
<name>fs.swift.service.myservice.public</name>
<value>true</value>
</property>
Container "mycontainer" should have a collection of objects with names starting
with "teradata/part-m-00000". Instead, that file is empty and there is a
collection of objects with names like
"swift://mycontainer.myservice/teradata/_temporary/0/_temporary/attempt_local415043862_0001_m_000000_0/part-m-00000/000010"
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