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https://issues.apache.org/jira/browse/HDFS-11150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15804220#comment-15804220
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Yuanbo Liu edited comment on HDFS-11150 at 1/6/17 10:20 AM:
------------------------------------------------------------
uploaded v5 patch for this JIRA.
[~umamaheswararao] / [~rakeshr] please help me review it if you have time.
Thanks in advance.
[~umamaheswararao] Due to some scenarios make my restart testing unstable, I've
changed some code of {{StoragePolicySatisfier}}, the basic idea is here:
{code}
expected type = [SSD, DISK, DISK]
current block types = [DISK(datanode A), DISK(datanode B), DISK(datanode C)],
their storage type is disk, and they all can be added into candidate source
list.
||
expected type = [SSD]
source pairs = [DISK => datanode A, DISK => datanode B, DISK => datanode C]
A, B, C are put into exclude node list.
||
if chooseTargetTypeInSameNode = true, then expected type =[], otherwise keep
searching by chooseTarget
||
if the expected type is empty, that means all unsatisfied blocks find target
nodes.
{code}
was (Author: yuanbo):
uploaded v5 patch for this JIRA.
[~umamaheswararao] / [~rakeshr] please help me review it if you have time.
Thanks in advance.
[~umamaheswararao] Due to some scenarios make my restart testing unstable, I've
changed some code of {{StoragePolicySatisfier}}, the basic idea is here:
{code}
expected type = [SSD, DISK, DISK]
current block types = [DISK(datanode A), DISK(datanode B), DISK(datanode C)]
||
expected type = [SSD]
source pairs = [DISK => datanode A, DISK => datanode B, DISK => datanode C]
A, B, C are put into exclude node list.
||
if chooseTargetTypeInSameNode = true, then expected type =[], otherwise keep
searching by chooseTarget
||
if the expected type is empty, that means all unsatisfied blocks find target
nodes.
{code}
> [SPS]: Provide persistence when satisfying storage policy.
> ----------------------------------------------------------
>
> Key: HDFS-11150
> URL: https://issues.apache.org/jira/browse/HDFS-11150
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Yuanbo Liu
> Assignee: Yuanbo Liu
> Attachments: HDFS-11150-HDFS-10285.001.patch,
> HDFS-11150-HDFS-10285.002.patch, HDFS-11150-HDFS-10285.003.patch,
> HDFS-11150-HDFS-10285.004.patch, HDFS-11150-HDFS-10285.005.patch,
> editsStored, editsStored.xml
>
>
> Provide persistence for SPS in case that Hadoop cluster crashes by accident.
> Basically we need to change EditLog and FsImage here.
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