[jira] [Created] (HDFS-3194) Continuous block scanning at DN side

2012-04-04 Thread suja s (Created) (JIRA)
Continuous block scanning at DN side


 Key: HDFS-3194
 URL: https://issues.apache.org/jira/browse/HDFS-3194
 Project: Hadoop HDFS
  Issue Type: Bug
Affects Versions: 1.0.3
Reporter: suja s
Priority: Minor
 Fix For: 1.0.3


Block scanning interval by default should be taken as 21 days(3 weeks) and each 
block scanning should happen once in 21 days.
Here the block is being scanned continuosly.

2012-04-03 10:44:47,056 INFO 
org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceScanner: Verification 
succeeded for 
BP-241703115-xx.xx.xx.55-1333086229434:blk_-2666054955039014473_1003
2012-04-03 10:45:02,064 INFO 
org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceScanner: Verification 
succeeded for 
BP-241703115-xx.xx.xx.55-1333086229434:blk_-2666054955039014473_1003
2012-04-03 10:45:17,071 INFO 
org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceScanner: Verification 
succeeded for 
BP-241703115-xx.xx.xx.55-1333086229434:blk_-2666054955039014473_1003
2012-04-03 10:45:32,079 INFO 
org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceScanner: Verification 
succeeded for BP-241703115-xx.xx.xx.55-1333086229434:blk_-2666054955039014473

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[jira] [Created] (HDFS-3161) 20 Append: Excluded DN replica from recovery should be removed from DN.

2012-03-29 Thread suja s (Created) (JIRA)
20 Append: Excluded DN replica from recovery should be removed from DN.
---

 Key: HDFS-3161
 URL: https://issues.apache.org/jira/browse/HDFS-3161
 Project: Hadoop HDFS
  Issue Type: Bug
Affects Versions: 1.0.0
Reporter: suja s
Priority: Critical
 Fix For: 1.0.3


1) DN1-DN2-DN3 are in pipeline.
2) Client killed abruptly
3) one DN has restarted , say DN3
4) In DN3 info.wasRecoveredOnStartup() will be true
5) NN recovery triggered, DN3 skipped from recovery due to above check.
6) Now DN1, DN2 has blocks with generataion stamp 2 and DN3 has older 
generation stamp say 1 and also DN3 still has this block entry in ongoingCreates
7) as part of recovery file has closed and got only two live replicas ( from 
DN1 and DN2)
8) So, NN issued the command for replication. Now DN3 also has the replica with 
newer generation stamp.
9) Now DN3 contains 2 replicas on disk. and one entry in ongoing creates with 
referring to blocksBeingWritten directory.

When we call append/ leaseRecovery, it may again skip this node for that 
recovery as blockId entry still presents in ongoingCreates with startup 
recovery true.
It may keep continue this dance for evry recovery.
And this stale replica will not be cleaned untill we restart the cluster. 
Actual replica will be trasferred to this node only through replication process.

Also unnecessarily that replicated blocks will get invalidated after next 
recoveries


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[jira] [Created] (HDFS-3162) BlockMap's corruptNodes count and CorruptReplicas map count is not matching.

2012-03-29 Thread suja s (Created) (JIRA)
BlockMap's corruptNodes count and CorruptReplicas map count is not matching.


 Key: HDFS-3162
 URL: https://issues.apache.org/jira/browse/HDFS-3162
 Project: Hadoop HDFS
  Issue Type: Bug
  Components: name-node
Affects Versions: 1.0.0
Reporter: suja s
Priority: Minor
 Fix For: 1.0.3


Even after invalidating the block, continuosly below log is coming
 
Inconsistent number of corrupt replicas for blk_1332906029734_1719blockMap has 
0 but corrupt replicas map has 1

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