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https://issues.apache.org/jira/browse/HDFS-8792?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yi Liu updated HDFS-8792:
-------------------------
Attachment: HDFS-8792.002.patch
Update a new patch. The new patch also improves {{excessReplicateMap}}, which
we don't need {{sort}}, so no need to use a {{TreeMap}}.
{code}
public final Map<String, LightWeightLinkedSet<BlockInfo>> excessReplicateMap
=
- new TreeMap<>();
+ new HashMap<>();
{code}
> Use LightWeightHashSet for BlockManager#postponedMisreplicatedBlocks
> --------------------------------------------------------------------
>
> Key: HDFS-8792
> URL: https://issues.apache.org/jira/browse/HDFS-8792
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Yi Liu
> Assignee: Yi Liu
> Attachments: HDFS-8792.001.patch, HDFS-8792.002.patch
>
>
> {{LightWeightHashSet}} requires fewer memory than java hashset.
> Furthermore, for {{excessReplicateMap}}, we can use {{HashMap}} instead of
> {{TreeMap}} instead, since no need to sort.
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