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https://issues.apache.org/jira/browse/FLINK-10203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Artsem Semianenka updated FLINK-10203:
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Description:
New StreamingFileSink ( introduced in 1.6 Flink version ) use
HadoopRecoverableFsDataOutputStream wrapper to write data in HDFS.
HadoopRecoverableFsDataOutputStream is a wrapper for FSDataOutputStream to have
an ability to restore from certain point of file after failure and continue
write data. To achieve this recover functionality the
HadoopRecoverableFsDataOutputStream use "truncate" method which was introduced
only in Hadoop 2.7 .
Unfortunately there are a few official Hadoop distributive which latest version
still use Hadoop 2.6 (This distributives: Cloudera, Pivotal HD ). As the result
Flinks Hadoop connector can't work with this distributives.
Flink declares that supported Hadoop from version 2.4.0 upwards
([https://ci.apache.org/projects/flink/flink-docs-release-1.6/start/building.html#hadoop-versions])
I guess we should emulate the functionality of "truncate" method for older
Hadoop versions.
was:
New StreamingFileSink ( introduced in 1.6 Flink version ) use
HadoopRecoverableFsDataOutputStream wrapper to write data in HDFS.
HadoopRecoverableFsDataOutputStream is a wrapper for FSDataOutputStream to have
an ability to restore from certain point of file after failure and continue
write data. To achive this recover functionality the
HadoopRecoverableFsDataOutputStream use "truncate" method which was introduced
only in Hadoop 2.7 .
Unfortently there are a few official Hadoop distibutives which latast version
still use Hadoop 2.6 (This distibutives: Cloudera, Pivotal HD ). As the result
Flink can't work with this distibutives.
Flink declares that supported Hadoop from version 2.4.0 upwards
([https://ci.apache.org/projects/flink/flink-docs-release-1.6/start/building.html#hadoop-versions])
I guess we should emulate the functionality of "truncate" method for older
Hadoop versions.
> Support truncate method for old Hadoop versions in
> HadoopRecoverableFsDataOutputStream
> --------------------------------------------------------------------------------------
>
> Key: FLINK-10203
> URL: https://issues.apache.org/jira/browse/FLINK-10203
> Project: Flink
> Issue Type: Bug
> Components: DataStream API, filesystem-connector
> Affects Versions: 1.6.0, 1.6.1, 1.7.0
> Reporter: Artsem Semianenka
> Priority: Major
> Labels: pull-request-available
>
> New StreamingFileSink ( introduced in 1.6 Flink version ) use
> HadoopRecoverableFsDataOutputStream wrapper to write data in HDFS.
> HadoopRecoverableFsDataOutputStream is a wrapper for FSDataOutputStream to
> have an ability to restore from certain point of file after failure and
> continue write data. To achieve this recover functionality the
> HadoopRecoverableFsDataOutputStream use "truncate" method which was
> introduced only in Hadoop 2.7 .
> Unfortunately there are a few official Hadoop distributive which latest
> version still use Hadoop 2.6 (This distributives: Cloudera, Pivotal HD ). As
> the result Flinks Hadoop connector can't work with this distributives.
> Flink declares that supported Hadoop from version 2.4.0 upwards
> ([https://ci.apache.org/projects/flink/flink-docs-release-1.6/start/building.html#hadoop-versions])
> I guess we should emulate the functionality of "truncate" method for older
> Hadoop versions.
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