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MapReduce >> mail # user >> HDFS blockIDs vs paths


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John Lilley 2013-07-18, 23:52
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Re: HDFS blockIDs vs paths
DataNodes track it. See and trace the volumeMap,
https://github.com/apache/hadoop-common/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java#L172

On Fri, Jul 19, 2013 at 5:22 AM, John Lilley <[EMAIL PROTECTED]> wrote:
> In HDFS, who tracks the filesystem path on the datanode of each block?  The
> namenode or the datanode?  If datanode, where is that table stored?
>
> John
>
>

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Harsh J
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB