42c71a5790
Contributed by Steve Loughran. This complements the StreamCapabilities Interface by allowing applications to probe for a specific path on a specific instance of a FileSystem client to offer a specific capability. This is intended to allow applications to determine * Whether a method is implemented before calling it and dealing with UnsupportedOperationException. * Whether a specific feature is believed to be available in the remote store. As well as a common set of capabilities defined in CommonPathCapabilities, file systems are free to add their own capabilities, prefixed with fs. + schema + . The plan is to identify and document more capabilities -and for file systems which add new features, for a declaration of the availability of the feature to always be available. Note * The remote store is not expected to be checked for the feature; It is more a check of client API and the client's configuration/knowledge of the state of the remote system. * Permissions are not checked. |
||
|---|---|---|
| dev-support | ||
| hadoop-assemblies | ||
| hadoop-build-tools | ||
| hadoop-client-modules | ||
| hadoop-cloud-storage-project | ||
| hadoop-common-project | ||
| hadoop-dist | ||
| hadoop-hdfs-project | ||
| hadoop-mapreduce-project | ||
| hadoop-maven-plugins | ||
| hadoop-minicluster | ||
| hadoop-project | ||
| hadoop-project-dist | ||
| hadoop-tools | ||
| hadoop-yarn-project | ||
| .gitattributes | ||
| .gitignore | ||
| BUILDING.txt | ||
| Jenkinsfile | ||
| LICENSE.txt | ||
| NOTICE.txt | ||
| README.txt | ||
| pom.xml | ||
| start-build-env.sh | ||
README.txt
For the latest information about Hadoop, please visit our website at: http://hadoop.apache.org/ and our wiki, at: http://wiki.apache.org/hadoop/ This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See <http://www.wassenaar.org/> for more information. The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code. The following provides more details on the included cryptographic software: Hadoop Core uses the SSL libraries from the Jetty project written by mortbay.org.