Martin Junghanns created GIRAPH-962:
---------------------------------------
Summary: TextAggregatorWriter with frequency AT_THE_END writes in
every superstep
Key: GIRAPH-962
URL: https://issues.apache.org/jira/browse/GIRAPH-962
Project: Giraph
Issue Type: Bug
Components: bsp
Affects Versions: 1.1.0
Reporter: Martin Junghanns
Priority: Minor
Fix For: 1.1.0
TextAggregatorWriter is used to write the content of all aggregators in a
superstep to a text file. It offers three predefined frequencies:
{{NEVER (0)}}
{{ALWAYS (1) // in each superstep}}
{{AT_THE_END (-1) // only in the last superstep}}
The aggregators are written in a superstep if the following condition evaluates
to true:
{{(frequeny == AT_THE_END && superstep == LAST_SUPERSTEP) || (frequency !=
NEVER && superstep % frequency == 0)}}
The problem is, that {{LAST_SUPERSTEP}} is represented by {{-1}} and {{x % -1 =
0}} for all {{x}}. This leads to the case, that if {{frequency = AT_THE_END}},
the content is written in every superstep.
On way to solve this is to extend the second part of the OR-clause to
{{(frequency != NEVER && frequency != AT_THE_END && superstep % frequency ==
0)}}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
