For the Array support: it might have just been a missed test case and is
just a bug. I don't recall how off the top of my head Arrays are
intended to be serialized (if it's some numeric counter in the Accumulo
CQ or just serializing all the elements in the array into the Accumulo
Value). If it isn't working for you, feel free to open up a JIRA issue
with the details and mention me so I notice it :). I can try to help
figure out what's busted, and, if necessary, a fix.
For the Map support, what are you trying to do differently? Going from
memory, I believe the support is for a fixed column family and an
optional column qualifier prefix. This limits the entries in a Map to
that column family, and allows you to place multiple maps into a given
family for locality purposes (identifying the maps by qualifier-prefix,
and getting Key uniqueness from the qualifier-suffix). There isn't much
flexibility in this regard for alternate serialization approaches -- the
considerations at the time were for a general-purpose schema that you
don't really have to think about (you just think SQL).
- Josh
peter.mar...@baesystems.com wrote:
Hi,
I have been trying out the Hive Accumulo Manager as described here
https://cwiki.apache.org/confluence/display/Hive/AccumuloIntegration
and it seems to work as advertised. Thanks.
However I don’t seem to be able to get any sensible results when I have
a Hive column of type ARRAY<> like ARRAY<INT> or ARRAY<STRING>.
Are Hive columns of ARRAY<> types not supported? If so then how are they
stored in Accumulo?
Also, although I can get a Hive MAP<STRING,X> to work by using the
approach where the map key is mapped to the column qualifier
(“Using an asterisk in the column mapping string”) I don’t seem to be
able to get a Hive MAP stored successfully in any other way.
Is this the only supported way to store Hive MAPs?
I know that I could customise the storage manager to achieve what I want
but, in the short-term at least, I would like
To know what I can achieve with the Hive Accumulo Storage Manager as is.
Regards,
Z
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