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https://issues.apache.org/jira/browse/HAMA-129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657671#action_12657671
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udanax edited comment on HAMA-129 at 12/17/08 8:48 PM:
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Each submatrix should be as large as possible. However, large cell causes
RetriesExhaustedException during HTable.commit.
>> Looks like HADOOP-4802 (in hbase, its part of HBASE-900). Big cells can
>> trigger OOME.
I would like to update hadoop/hbase. I think we can't release with hadoop/hbase
0.18.x
was (Author: udanax):
Each submatrix should be as large as possible. However, large cell causes
RetriesExhaustedException during HTable.commit.
Looks like HADOOP-4802 (in hbase, its part of HBASE-900). Big cells can
trigger OOME.
Let's update hadoop/hbase.
> Improving speed of matrix multiplication
> ----------------------------------------
>
> Key: HAMA-129
> URL: https://issues.apache.org/jira/browse/HAMA-129
> Project: Hama
> Issue Type: Improvement
> Components: implementation
> Affects Versions: 0.1.0
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Fix For: 0.1.0
>
> Attachments: HAMA-129.patch, HAMA-129_v01.patch, HAMA-129_v02.patch,
> HAMA-129_v03.patch
>
>
> We use a blockinputformat (row based partitioning). but it causes
> "java.lang.OutOfMemoryError: Java heap space" when size is big.
> I'll write the formulas and partition them as PIEstimator.
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