unable to execute hadoop fs -put command from Java -



unable to execute hadoop fs -put command from Java -

i trying execute hadoop fs -put <source> <destination> java code. when execute command straight terminal, works fine when seek execute command within java code using

string[] str = {"/usr/bin/hadoop","fs -put", source, dest}; runtime.getruntime().exec(str);

i error error: not find or load main class fs. tried execute non-hadoop commands ls,mkdir commands java , worked fine hadoop commands not getting executed though work fine terminal.

what possible reason , how can solve it?

java api try: tried utilize java api perform re-create operation error. java code :

string source = "/home/tmpe/file1.csv"; string dest = "/user/tmpe/file1.csv"; configuration conf = new configuration(); conf.set("fs.defaultfs", "hdfs://node1:8020"); filesystem fs = filesystem.get(conf); path targetpath = new path(dest); path sourcepath = new path(source); fs.copyfromlocalfile(false,true,sourcepath,targetpath);

the error is:

exception in thread "main" java.io.ioexception: mkdirs failed create /user/tmpe @ org.apache.hadoop.fs.checksumfilesystem.create(checksumfilesystem.java:378) @ org.apache.hadoop.fs.checksumfilesystem.create(checksumfilesystem.java:364) @ org.apache.hadoop.fs.filesystem.create(filesystem.java:564) @ org.apache.hadoop.fs.filesystem.create(filesystem.java:545) @ org.apache.hadoop.fs.filesystem.create(filesystem.java:452) @ org.apache.hadoop.fs.fileutil.copy(fileutil.java:229) @ org.apache.hadoop.fs.filesystem.copyfromlocalfile(filesystem.java:1230)

i have created /user/tmpe folder , has total read-write permissions still error comes. unable issue resolved

i guess not have hadoop_home environment variable set.

but since you're in java, why on earth want haddop fs -put in external process when java api more friendly shell ?

java hadoop

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