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https://issues.apache.org/jira/browse/ARROW-473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16217599#comment-16217599
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ASF GitHub Bot commented on ARROW-473:
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AnkitAggarwalPEC commented on issue #1031: WIP ARROW-473: [C++/Python] Add
public API for retrieving block locations for a particular HDFS file
URL: https://github.com/apache/arrow/pull/1031#issuecomment-339115923
@cpcloud
Not connected to Impala, could not execute queries.
Starting Impala Shell without Kerberos authentication
Error connecting: TTransportException, Could not connect to arrow-hdfs:21000
Not connected to Impala, could not execute queries.
Starting Impala Shell without Kerberos authentication
Connected to arrow-hdfs:21000
Server version: impalad version 2.9.0-cdh5.12.0 RELEASE (build
03c6ddbdcec39238be4f5b14a300d5c4f576097e)
Query: select VERSION()
Query submitted at: 2017-10-24 20:08:08 (Coordinator:
http://arrow-hdfs:25000)
ERROR: AnalysisException: This Impala daemon is not ready to accept user
requests. Status: Waiting for catalog update from the StateStore.
Is something else is needed to be done other that "./test_hdfs.sh" ?
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> [C++/Python] Add public API for retrieving block locations for a particular
> HDFS file
> -------------------------------------------------------------------------------------
>
> Key: ARROW-473
> URL: https://issues.apache.org/jira/browse/ARROW-473
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++, Python
> Reporter: Wes McKinney
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> This is necessary for applications looking to schedule data-local work.
> libhdfs does not have APIs to request the block locations directly, so we
> need to see if the {{hdfsGetHosts}} function will do what we need. For
> libhdfs3 there is a public API function
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