Cascalog-core 2.0.0 API documentation

delete-all

delete-file-recursively is preemptive delete on exiting the code
block for repl and tests run in the same process.

delete-all-fs

delete-file-recursively

Delete file f. If it's a directory, recursively delete all its contents.
Raise an exception if any deletion fails unless silently is true.

get-bytes

Extracts a byte array from a Hadoop BytesWritable object. As
mentioned in the [BytesWritable javadoc](http://goo.gl/cjjlD), only
the first N bytes are valid, where N = `(.getLength byteswritable)`.

log-levels

temp-dir

1) creates a directory in System.getProperty("java.io.tmpdir")
2) calls tempDir.deleteOn Exit() so the file is deleted by the jvm.
reference: ;http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4735419
deleteOnExit is last resort cleanup on jvm exit.

temp-path

tmp-dir-property

Use this variable as key in JobConf if you want to override the
root of temporary paths. See with-fs-tmp.

with-fs-tmp

macro

Generates unique, temporary path names as subfolders of <root>/cascalog_reserved.
<root> by default will be '/tmp', but you can configure it via the
JobConf property `cascalog.io/tmp-dir-property`.

with-log-level

macro

with-tmp-files

macro

write-lines

Writes lines (a seq) to f, separated by newlines.  f is opened with
writer, and automatically closed at the end of the sequence.