[jira] [Commented] (HBASE-5381) Make memstore.flush.size as a table level configuration

2012-02-10 Thread Jean-Daniel Cryans (Commented) (JIRA)

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https://issues.apache.org/jira/browse/HBASE-5381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13205617#comment-13205617
 ] 

Jean-Daniel Cryans commented on HBASE-5381:
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It already is, see MEMSTORE_FLUSHSIZE in the shell or 
HTD.setMemStoreFlushSize(). Am I missing something?

 Make memstore.flush.size as a table level configuration
 ---

 Key: HBASE-5381
 URL: https://issues.apache.org/jira/browse/HBASE-5381
 Project: HBase
  Issue Type: Improvement
Reporter: Liyin Tang
Assignee: Liyin Tang

 Currently the region server will flush mem store of the region based on the 
 limitation of the global mem store flush size and global low water mark. 
 However, It will cause the hot tables, which serve more write traffic, to 
 flush too frequently even though the overall mem store heap usage is quite 
 low. Too frequently flush would also contribute to too many minor 
 compactions. 
 So if we can make memstore.flush.size as a table level configuration, it 
 would be more flexible to config different tables with different desired mem 
 store flush size based on compaction ratio, recovery time and put ops.

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[jira] [Commented] (HBASE-5381) Make memstore.flush.size as a table level configuration

2012-02-10 Thread Zhihong Yu (Commented) (JIRA)

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https://issues.apache.org/jira/browse/HBASE-5381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13205621#comment-13205621
 ] 

Zhihong Yu commented on HBASE-5381:
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I would suggest putting more attention to HBASE-5349.

 Make memstore.flush.size as a table level configuration
 ---

 Key: HBASE-5381
 URL: https://issues.apache.org/jira/browse/HBASE-5381
 Project: HBase
  Issue Type: Improvement
Reporter: Liyin Tang
Assignee: Liyin Tang

 Currently the region server will flush mem store of the region based on the 
 limitation of the global mem store flush size and global low water mark. 
 However, It will cause the hot tables, which serve more write traffic, to 
 flush too frequently even though the overall mem store heap usage is quite 
 low. Too frequently flush would also contribute to too many minor 
 compactions. 
 So if we can make memstore.flush.size as a table level configuration, it 
 would be more flexible to config different tables with different desired mem 
 store flush size based on compaction ratio, recovery time and put ops.

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[jira] [Commented] (HBASE-5381) Make memstore.flush.size as a table level configuration

2012-02-10 Thread Liyin Tang (Commented) (JIRA)

[ 
https://issues.apache.org/jira/browse/HBASE-5381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13205689#comment-13205689
 ] 

Liyin Tang commented on HBASE-5381:
---

Thanks Jean and Ted. I missed something before. Please close this jira for me.
Thanks a lot

 Make memstore.flush.size as a table level configuration
 ---

 Key: HBASE-5381
 URL: https://issues.apache.org/jira/browse/HBASE-5381
 Project: HBase
  Issue Type: Improvement
Reporter: Liyin Tang
Assignee: Liyin Tang

 Currently the region server will flush mem store of the region based on the 
 limitation of the global mem store flush size and global low water mark. 
 However, It will cause the hot tables, which serve more write traffic, to 
 flush too frequently even though the overall mem store heap usage is quite 
 low. Too frequently flush would also contribute to too many minor 
 compactions. 
 So if we can make memstore.flush.size as a table level configuration, it 
 would be more flexible to config different tables with different desired mem 
 store flush size based on compaction ratio, recovery time and put ops.

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