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Hadoop URI utility

Project description


BigData URI utility

The idea is that every information stored is addressable using a URI, in this case we like to work with HDFS and HIVE. There

LindexURI.isValid( uri ) : returns true if the URI is valid, it's a static method and can be used in a quick way.

luri = LindexURI(uri)


returns true if the HIVE uri is defining a partitioned table

if uri == "hive://databasename/tablename?dt=201212" luri.isPartitioned returns True.


returns a dictionary that describes the HIVE partition

if uri == "hive://databasename/tablename?dt=201212" luri.getPartitions() returns

OrderedDict( 'dt': '201212' )


gets the database name from the HIVE uri ( this can be modified to work also with HDFS paths )

if uri == "hive://databasename/tablename?dt=201212" luri.getDatabase() returns 'databasename'


gets the table name from HIVE uri, can be modified to work also with HDFS paths

if uri == "hive://databasename/tablename?dt=201212" luri.getDatabase() returns 'tablename'


gets the HDFS hostname

if uri == "hdfs://hdfs-prod/warehouse/databasename.db/tablename.db/dt=201212" luri.getHDFSHostName returns 'hdfs-prod'


gets the path from the HDFS uri

if uri == "hdfs://hdfs-prod/warehouse/databasename.db/tablename.db/dt=201212" luri.getHDFSPath() returns 'warehouse/databasename.db/tablename.db/dt=201212'


gets the schema

if uri == "hdfs://hdfs-prod/warehouse/databasename.db/tablename.db/dt=201212" luri.getSchema() returns 'hdfs'


converts the partition coordinates into an HDFS path

p = OrderedDict( 'dt' : '201212', 'country': 'AU' ) dt=201212&country=AU


converts the HDFS path into a partition coordinates dictionary


    root path : "/Vault/Docomodigital/Production/Newton/events/prod/"

    partitions : {
        "year" : "2018",
        "month" : "08",
        "day" : "07",
        "hour" : "09"


returns true if the HDFS path can define a partition

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