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https://issues.apache.org/jira/browse/HADOOP-15027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16321869#comment-16321869
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wujinhu commented on HADOOP-15027:
----------------------------------
Hi [~Sammi], here are some performance data. I use this
tool(https://github.com/hortonworks/hive-testbench) to compare run time between
this patch and current version.
{code:java}
query after before
query13.sql 241.591 440.524
query28.sql 1259.307 1943.949
query51.sql 469.618 722.904
query73.sql 216.596 414.75
query96.sql 268.869 476.473
{code}
> AliyunOSS: Support multi-thread pre-read to improve read from Hadoop to
> Aliyun OSS performance
> ----------------------------------------------------------------------------------------------
>
> Key: HADOOP-15027
> URL: https://issues.apache.org/jira/browse/HADOOP-15027
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/oss
> Affects Versions: 3.0.0
> Reporter: wujinhu
> Assignee: wujinhu
> Attachments: HADOOP-15027.001.patch, HADOOP-15027.002.patch,
> HADOOP-15027.003.patch, HADOOP-15027.004.patch, HADOOP-15027.005.patch,
> HADOOP-15027.006.patch, HADOOP-15027.007.patch, HADOOP-15027.008.patch,
> HADOOP-15027.009.patch, HADOOP-15027.010.patch, HADOOP-15027.011.patch,
> HADOOP-15027.012.patch
>
>
> Currently, AliyunOSSInputStream uses single thread to read data from
> AliyunOSS, so we can do some refactoring by using multi-thread pre-read to
> improve read performance.
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