[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15127069#comment-15127069 ] Hudson commented on HDFS-9701: -- FAILURE: Integrated in Hadoop-trunk-Commit #9217 (See

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15127117#comment-15127117 ] Xiao Chen commented on HDFS-9701: - Thanks for the review and commit Eddy, and thanks Vinay and Xiaobing for

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15122049#comment-15122049 ] Xiaobing Zhou commented on HDFS-9701: - Thanks, that lock is indeed in the call stack of reconfig. The

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15120843#comment-15120843 ] Xiaobing Zhou commented on HDFS-9701: - Thanks [~xiaochen] for the work. Could you explain why the

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15120859#comment-15120859 ] Xiao Chen commented on HDFS-9701: - Thanks [~xiaobingo] for looking at this. We actually have multiple locks

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15120575#comment-15120575 ] Xiao Chen commented on HDFS-9701: - Failed tests seem unrelated and are known to be flaky (e.g. HDFS-9466)

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15119761#comment-15119761 ] Xiao Chen commented on HDFS-9701: - Ah Good catch [~vinayrpet]! And thanks for reviewing. I added the second

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15120034#comment-15120034 ] Hadoop QA commented on HDFS-9701: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15119255#comment-15119255 ] Vinayakumar B commented on HDFS-9701: - One issue I am seeing here is in {{FSVolumeList#checkDirs()}}

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15116999#comment-15116999 ] Hadoop QA commented on HDFS-9701: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15118585#comment-15118585 ] Hadoop QA commented on HDFS-9701: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15117686#comment-15117686 ] Xiao Chen commented on HDFS-9701: - The findbugs warning helped me thinking of a cleaner way to fix this.

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15117943#comment-15117943 ] Hadoop QA commented on HDFS-9701: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15118247#comment-15118247 ] Lei (Eddy) Xu commented on HDFS-9701: - Hi, [~xiaochen] Thanks a lot for digging into this bug. The

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15118375#comment-15118375 ] Xiao Chen commented on HDFS-9701: - Thanks [~eddyxu] so much for the review! All your comments above are

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15116830#comment-15116830 ] Xiao Chen commented on HDFS-9701: - Patch 2 fixes checkstyle, findbugs issues, and added some javadocs. For

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15116149#comment-15116149 ] Xiao Chen commented on HDFS-9701: - Most notable jstacks: Reconfigure task: {noformat} "Reconfiguration

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15116165#comment-15116165 ] Xiao Chen commented on HDFS-9701: - Thanks a lot to [~eddyxu] for the offline discussion about the general

[jira] [Commented] (HDFS-9701) DN may deadlock when hot-swapping under load

[ https://issues.apache.org/jira/browse/HDFS-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15116466#comment-15116466 ] Hadoop QA commented on HDFS-9701: - | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||