[
https://issues.apache.org/jira/browse/ACCUMULO-3633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14367200#comment-14367200
]
Josh Elser commented on ACCUMULO-3633:
--------------------------------------
bq. in addition to combiner and filter, could mention transforming iterator
As a note, I looked at TransformingIterator to potentially include as a
base-class for users to build on, but I ultimately didn't feel like it was
general/simple/easy enough to be worth mentioning to a user who was writing
their first (few) iterator(s). I know the class is well written/tested, but I
just couldn't find justification to recommend that a developer try to use it
themselves. If there's a simple case that I overlooked that isn't about
rewriting large amounts of data in a very tricky manner, it should definitely
be added.
> Please provide information on implementing custom iterators in the
> documentation
> --------------------------------------------------------------------------------
>
> Key: ACCUMULO-3633
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3633
> Project: Accumulo
> Issue Type: Wish
> Components: docs
> Affects Versions: 1.6.0
> Environment: Centos 6.5, Accumulo 1.6.0, CDH 5.
> Reporter: Vaibhav Thapliyal
> Assignee: Josh Elser
> Labels: documentation
> Fix For: 1.7.0
>
> Attachments:
> 0001-ACCUMULO-3633-User-manual-chapter-on-custom-iterator.patch, Apache
> Accumulo User Manual Version 1.7.pdf
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Dear all,
> Can you please provide a documentation regarding creating custom Iterators.
> For example, explain the functionality of the functions inside
> SortedKeyValueIterator and how to override those functions.
> Please explain how these functions are executed (which class calls these
> functions when the iterator executes).
> I would appreciate if these changes are made in your future documentations as
> this would help developers who are new to accumulo to quickly get started on
> writing their own custom iterators which is an essential part of accumulo.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
