Arshak,
Looks like that was a bug against 1.5.0 and fixed in 1.5.1.
https://issues.apache.org/jira/browse/ACCUMULO-1571
On 4/8/14, 7:24 PM, Arshak Navruzyan wrote:
I am trying to print out the histogram with that command but get the
usage message instead. --dump option is working fine. I'm on Accumulo
1.5.0
PACKAGE=org.apache.accumulo.core.file.rfile
bin/accumulo $PACKAGE.PrintInfo --histogram
/accumulo/tables/53/t-0003371/A0003jbg.rf
Usage: org.apache.accumulo.core.file.rfile.PrintInfo [options] <file> {
<file> ... }
Options:
-d, --dump
dump the key/value pairs
Default: false
-h, -?, --help, -help
Default: false
--historgram
print a histogram of the key-value sizes
Default: false
Unknown option: --histogram
On Sat, Feb 22, 2014 at 8:47 AM, Mike Drob <[email protected]
<mailto:[email protected]>> wrote:
There's not a single good way that I am aware of, but there are a
couple ways that will get you close.
First, you can use the SortedKeyIterator to truncate values and
potentially save yourself a lot of data transfer.
Second, each RFile header block will track the columns contained, up
to 1000 (possibly configurable). Check out PrintInfo[1].
Mike
[1]:
https://github.com/apache/accumulo/blob/master/core/src/main/java/org/apache/accumulo/core/file/rfile/PrintInfo.java
On Sat, Feb 22, 2014 at 11:25 AM, Arshak Navruzyan
<[email protected] <mailto:[email protected]>> wrote:
I don't know the inner workings of the Rfiles enough but I was
wondering if there is a faster way to get a unique list of
columns in Accumulo (short of doing a full mapreduce). Is there
some way to skip ahead all the volumes and just get to the next
column?
Thanks
