[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2013-09-18 Thread stack (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

stack updated HBASE-5606:
-

Fix Version/s: (was: 0.95.0)
   0.92.2

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Assignee: Prakash Khemani
Priority: Critical
 Fix For: 0.92.2, 0.94.0

 Attachments: 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch, 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2013-09-18 Thread stack (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

stack updated HBASE-5606:
-

Fix Version/s: 0.95.0

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Assignee: Prakash Khemani
Priority: Critical
 Fix For: 0.92.2, 0.94.0, 0.95.0

 Attachments: 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch, 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2012-04-03 Thread Zhihong Yu (Updated) (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Zhihong Yu updated HBASE-5606:
--

Fix Version/s: 0.96.0
   0.94.0
 Hadoop Flags: Reviewed

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Assignee: Prakash Khemani
Priority: Critical
 Fix For: 0.92.2, 0.94.0, 0.96.0

 Attachments: 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch, 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2012-04-03 Thread Zhihong Yu (Updated) (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Zhihong Yu updated HBASE-5606:
--

Resolution: Fixed
Status: Resolved  (was: Patch Available)

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Assignee: Prakash Khemani
Priority: Critical
 Fix For: 0.92.2, 0.94.0, 0.96.0

 Attachments: 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch, 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2012-03-26 Thread Prakash Khemani (Updated) (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Prakash Khemani updated HBASE-5606:
---

Attachment: 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch

Do not do any error processing if the getDataSetWatch() call from 
SplitLogManager timeoutMonitor fails

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Priority: Critical
 Fix For: 0.92.2

 Attachments: 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch, 5606.txt


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2012-03-26 Thread Ted Yu (Updated) (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ted Yu updated HBASE-5606:
--

Attachment: 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch

Re-attaching Prakash's patch.

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Priority: Critical
 Fix For: 0.92.2

 Attachments: 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch, 
 0001-HBASE-5606-SplitLogManger-async-delete-node-hangs-lo.patch


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2012-03-21 Thread Zhihong Yu (Updated) (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Zhihong Yu updated HBASE-5606:
--

Status: Patch Available  (was: Open)

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Priority: Critical
 Fix For: 0.92.2

 Attachments: 5606.txt


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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[jira] [Updated] (HBASE-5606) SplitLogManger async delete node hangs log splitting when ZK connection is lost

2012-03-20 Thread stack (Updated) (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HBASE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

stack updated HBASE-5606:
-

 Priority: Critical  (was: Major)
Fix Version/s: 0.92.2

Pretty bad.  Look to fix for 0.92.2

 SplitLogManger async delete node hangs log splitting when ZK connection is 
 lost 
 

 Key: HBASE-5606
 URL: https://issues.apache.org/jira/browse/HBASE-5606
 Project: HBase
  Issue Type: Bug
  Components: wal
Affects Versions: 0.92.0
Reporter: Gopinathan A
Priority: Critical
 Fix For: 0.92.2


 1. One rs died, the servershutdownhandler found it out and started the 
 distributed log splitting;
 2. All tasks are failed due to ZK connection lost, so the all the tasks were 
 deleted asynchronously;
 3. Servershutdownhandler retried the log splitting;
 4. The asynchronously deletion in step 2 finally happened for new task
 5. This made the SplitLogManger in hanging state.
 This leads to .META. region not assigened for long time
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(55413,79):2012-03-14 
 19:28:47,932 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89303,79):2012-03-14 
 19:34:32,387 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: put up 
 splitlog task at znode 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}
 {noformat}
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(80417,99):2012-03-14 
 19:34:31,196 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 hbase-root-master-HOST-192-168-47-204.log.2012-03-14(89456,99):2012-03-14 
 19:34:32,497 DEBUG 
 org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback: deleted 
 /hbase/splitlog/hdfs%3A%2F%2F192.168.47.205%3A9000%2Fhbase%2F.logs%2Flinux-114.site%2C60020%2C1331720381665-splitting%2Flinux-114.site%252C60020%252C1331720381665.1331752316170
 {noformat}

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