[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Yiqun Lin updated HDFS-13571: - Fix Version/s: 3.3.0 Hadoop Flags: Reviewed Deadnode detection is useful and will be a nice improvement in client side. I help review and merge the change in recent sub-tasks. This feature is false by default. Any further comments/suggestions for this improvement are welcomed. Thanks [~leosun08] for the hard working. BTW, can you help add a release note for this JIRA? > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Major > Fix For: 3.3.0 > > Attachments: DeadNodeDetectorDesign.pdf, HDFS-13571-2.6.diff, node > status machine.png > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Lisheng Sun updated HDFS-13571: --- Attachment: DeadNodeDetectorDesign.pdf > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Major > Attachments: DeadNodeDetectorDesign.pdf, HDFS-13571-2.6.diff, node > status machine.png > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian Jira (v8.3.2#803003) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Yiqun Lin updated HDFS-13571: - Priority: Major (was: Minor) > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Major > Attachments: HDFS-13571-2.6.diff, node status machine.png > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian JIRA (v7.6.14#76016) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Lisheng Sun updated HDFS-13571: --- Attachment: node status machine.png > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Minor > Attachments: HDFS-13571-2.6.diff, node status machine.png > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian JIRA (v7.6.14#76016) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Lisheng Sun updated HDFS-13571: --- Attachment: 屏幕快照 2019-07-14 下午12.27.22.png > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Minor > Attachments: HDFS-13571-2.6.diff > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian JIRA (v7.6.14#76016) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Lisheng Sun updated HDFS-13571: --- Attachment: (was: 屏幕快照 2019-07-14 下午12.27.22.png) > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Minor > Attachments: HDFS-13571-2.6.diff > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian JIRA (v7.6.14#76016) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Lisheng Sun updated HDFS-13571: --- Fix Version/s: (was: 3.0.2) > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Minor > Attachments: HDFS-13571-2.6.diff > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian JIRA (v7.6.14#76016) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead DataNode Detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Lisheng Sun updated HDFS-13571: --- Summary: Dead DataNode Detector (was: Dead datanode detector) > Dead DataNode Detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Assignee: Lisheng Sun >Priority: Minor > Fix For: 3.0.2 > > Attachments: HDFS-13571-2.6.diff > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian JIRA (v7.6.14#76016) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-13571) Dead datanode detector
[ https://issues.apache.org/jira/browse/HDFS-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Gang Xie updated HDFS-13571: Attachment: HDFS-13571-2.6.diff > Dead datanode detector > -- > > Key: HDFS-13571 > URL: https://issues.apache.org/jira/browse/HDFS-13571 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client >Affects Versions: 2.4.0, 2.6.0, 3.0.2 >Reporter: Gang Xie >Priority: Minor > Fix For: 3.0.2 > > Attachments: HDFS-13571-2.6.diff > > > Currently, the information of the dead datanode in DFSInputStream in stored > locally. So, it could not be shared among the inputstreams of the same > DFSClient. In our production env, every days, some datanodes dies with > different causes. At this time, after the first inputstream blocked and > detect this, it could share this information to others in the same DFSClient, > thus, the ohter inputstreams are still blocked by the dead node for some > time, which could cause bad service latency. > To eliminate this impact from dead datanode, we designed a dead datanode > detector, which detect the dead ones in advance, and share this information > among all the inputstreams in the same client. This improvement has being > online for some months and works fine. So, we decide to port to the 3.0 (the > version used in our production env is 2.4 and 2.6). > I will do the porting work and upload the code later. -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
