Ahmed Hussein 5f5d7ecf59 HDFS-15706. HttpFS: Log more information on request failures. (#2515)
(cherry picked from commit 07655a7040806c4c9687288de89e42cfacf0365e)
(cherry picked from commit a7dbd3b6f978d28ef7e046add2e3270ae3d9d9f6)
(cherry picked from commit f547cd43d140dc680fab1782cda071f4a41dddc5)
2020-12-03 15:15:47 -08:00
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HttpFS - Hadoop HDFS over HTTP

HttpFS is a server that provides a REST HTTP gateway to HDFS with full
filesystem read & write capabilities.

HttpFS can be used to transfer data between clusters running different
versions of Hadoop (overcoming RPC versioning issues), for example using
Hadoop DistCP.

HttpFS can be used to access data in HDFS on a cluster behind of a firewall
(the HttpFS server acts as a gateway and is the only system that is allowed
to cross the firewall into the cluster).

HttpFS can be used to access data in HDFS using HTTP utilities (such as curl
and wget) and HTTP libraries Perl from other languages than Java.
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