[jira] [Created] (MAHOUT-1290) Issue when running Mahout Recommender Demo

Suneel Marthi created MAHOUT-1290: - Summary: Issue when running Mahout Recommender Demo Key: MAHOUT-1290 URL: https://issues.apache.org/jira/browse/MAHOUT-1290 Project: Mahout Issue Type: Bug

Build failed in Jenkins: mahout-nightly #1301

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Jenkins build is back to normal : Mahout-Quality #2155

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Build failed in Jenkins: Mahout-Examples-Cluster-Reuters-II #552

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0.8

0.8 artifacts are pushed to the mirror location. I will send an official announcement tomorrow. In the meantime, please review the release notes at: https://cwiki.apache.org/confluence/display/MAHOUT/Release+0.8 The new features/fixes section is pretty weak. -Grant

[jira] [Updated] (MAHOUT-1284) DummyRecordWriter's bug with reused Writables

[ https://issues.apache.org/jira/browse/MAHOUT-1284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Grant Ingersoll updated MAHOUT-1284: Fix Version/s: (was: 0.8) (was: 0.7) 0.9

Re: Regarding Online Recommenders

Ok, I tested the MatrixBackedDataModel, and the heap size is reduced to 7G for the Netflix Data, still large. The same history is encoded in 2 SparseRowMatrices, one is row-indexed by users and one is by item. It has serious concurrency issues at several places, though (sets and removes need to b