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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (HBASE-15222) Use less contended classes for metrics
Date Thu, 25 Feb 2016 08:03:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Duo Zhang updated HBASE-15222:
------------------------------
    Comment: was deleted

(was: 你是中国人吗?不好意思,英语不好,想请教关于hbase的两个问题:
1.我使用MR(put方式)建二级索引表,但是Job运行时间很长,最后直接reduce直接卡在reduce
99%,查看reduce task,发现写入不进去了,使用jstack -gcutil 查看YARNCHILD没有full
gc,查看HRegionServer(Xms4G)一直full gc,请问你有什么好的建议吗?
2.有一RS的日志总是输出:INFO org.apache.hadoop.hbase.regionser.HRegionServer:SCanner
51877 lease expired on region tablename,145377609333.44a5b5020f...,请问怎么解决或者好的建议?
谢谢!!方便的话请加我QQ:1736333563,或者告诉我你的联系方式)

> Use less contended classes for metrics
> --------------------------------------
>
>                 Key: HBASE-15222
>                 URL: https://issues.apache.org/jira/browse/HBASE-15222
>             Project: HBase
>          Issue Type: Bug
>          Components: metrics
>    Affects Versions: 2.0.0, 1.2.0, 1.3.0
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>            Priority: Critical
>             Fix For: 2.0.0, 1.3.0
>
>         Attachments: HBASE-15222-v1.patch, HBASE-15222-v10.patch, HBASE-15222-v11.patch,
HBASE-15222-v12.patch, HBASE-15222-v13.patch, HBASE-15222-v2.patch, HBASE-15222-v3.patch,
HBASE-15222-v5.patch, HBASE-15222-v6.patch, HBASE-15222-v8.patch, HBASE-15222-v9.patch, HBASE-15222.patch
>
>
> Running the benchmarks now, but it looks like the results are pretty extreme. The locking
in our histograms is pretty extreme.



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