[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16131507#comment-16131507 ] SammiChen commented on HDFS-9822: - Hi [~andrew.wang], so far I haven't reproduced the issue yet. I will

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16130881#comment-16130881 ] Hadoop QA commented on HDFS-9822: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16130860#comment-16130860 ] Andrew Wang commented on HDFS-9822: --- Hey Sammi, are you still planning to work on this for beta1? >

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15950495#comment-15950495 ] Rakesh R commented on HDFS-9822: [~Sammi], sure please feel free to take this. I will help in

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15950385#comment-15950385 ] Hadoop QA commented on HDFS-9822: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15950376#comment-15950376 ] SammiChen commented on HDFS-9822: - Hi [~rakeshr], do you have plan to continue working on it? If you don't

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15817023#comment-15817023 ] Hadoop QA commented on HDFS-9822: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15816843#comment-15816843 ] Andrew Wang commented on HDFS-9822: --- This one looks like a good bug, adding to "nice-to-have" and it

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15189704#comment-15189704 ] Rakesh R commented on HDFS-9822: Thanks [~zhz] for the advice. I will consider this in the next patch. >

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15189690#comment-15189690 ] Rakesh R commented on HDFS-9822: Thanks Walter, Li Bo. If I remember correctly, I had observed once in my

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15186974#comment-15186974 ] Walter Su commented on HDFS-9822: - bq. I am still a little confused how this error happens. Me too. I don't

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15186510#comment-15186510 ] Li Bo commented on HDFS-9822: - hi,Rakesh After reading the code of {{UnderReplicationBlocks}} I am still a

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15186150#comment-15186150 ] Kai Zheng commented on HDFS-9822: - BIN ZHOU => [~zhz]. > Erasure Coding: Avoids scheduling multiple

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15186145#comment-15186145 ] Kai Zheng commented on HDFS-9822: - Thanks [~zhzhoubin]. bq. I don't think we should schedule all EC tasks

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15186017#comment-15186017 ] Zhe Zhang commented on HDFS-9822: - Interesting case here. I think it happens when 1) a under replicated

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15178689#comment-15178689 ] Hadoop QA commented on HDFS-9822: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15178302#comment-15178302 ] Rakesh R commented on HDFS-9822: Thanks a lot [~drankye] for the interests and useful comments. bq. 1. Why

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15177980#comment-15177980 ] Kai Zheng commented on HDFS-9822: - Thanks [~rakeshr] for working on this. I have some questions. 1. Why

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15177752#comment-15177752 ] Hadoop QA commented on HDFS-9822: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

[ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15177577#comment-15177577 ] Rakesh R commented on HDFS-9822: {{BlockManager#computeReconstructionWorkForBlocks()}} is getting all the