[ 
https://issues.apache.org/jira/browse/HDFS-7180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Eric Zhiqiang Ma updated HDFS-7180:
-----------------------------------
    Description: 
We are using Hadoop 2.5.0 (HDFS only) and start and mount the NFSv3 gateway on 
one node in the cluster to let users upload data with rsync.

However, we find the NFSv3 daemon seems frequently get stuck while the HDFS 
seems working well. (hdfds dfs -ls and etc. works just well). The last stuck we 
found is after around 1 day running and several hundreds GBs of data uploaded.

The NFSv3 daemon is started on one node and on the same node the NFS is mounted.

>From the node where the NFS is mounted:

dmsg shows like this:

[1859245.368108] nfs: server localhost not responding, still trying
[1859245.368111] nfs: server localhost not responding, still trying
[1859245.368115] nfs: server localhost not responding, still trying
[1859245.368119] nfs: server localhost not responding, still trying
[1859245.368123] nfs: server localhost not responding, still trying
[1859245.368127] nfs: server localhost not responding, still trying
[1859245.368131] nfs: server localhost not responding, still trying
[1859245.368135] nfs: server localhost not responding, still trying
[1859245.368138] nfs: server localhost not responding, still trying
[1859245.368142] nfs: server localhost not responding, still trying
[1859245.368146] nfs: server localhost not responding, still trying
[1859245.368150] nfs: server localhost not responding, still trying
[1859245.368153] nfs: server localhost not responding, still trying

The mounted directory can not be `ls` and `df -hT` gets stuck too.

The latest lines from the nfs3 log in the hadoop logs directory:

2014-10-02 05:43:20,452 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
user map size: 35
2014-10-02 05:43:20,461 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
group map size: 54
2014-10-02 05:44:40,374 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:44:40,732 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:46:06,535 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:46:26,075 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:47:56,420 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:48:56,477 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:51:46,750 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:53:23,809 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:53:24,508 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:55:57,334 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:57:07,428 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:58:32,609 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Update 
cache now
2014-10-02 05:58:32,610 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Not doing 
static UID/GID mapping because '/etc/nfs.map' does not exist.
2014-10-02 05:58:32,620 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
user map size: 35
2014-10-02 05:58:32,628 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
group map size: 54
2014-10-02 06:01:32,098 WARN org.apache.hadoop.hdfs.DFSClient: Slow 
ReadProcessor read fields took 60062ms (threshold=30000ms); ack: seqno: -2 
status: SUCCESS status: ERROR downstreamAckTimeNanos: 0, targets: 
[10.0.3.172:50010, 10.0.3.176:50010]
2014-10-02 06:01:32,099 WARN org.apache.hadoop.hdfs.DFSClient: DFSOutputStream 
ResponseProcessor exception  for block 
BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643
java.io.IOException: Bad response ERROR for block 
BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643 from datanode 
10.0.3.176:50010
        at 
org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer$ResponseProcessor.run(DFSOutputStream.java:828)
2014-10-02 06:07:00,368 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery 
for block BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643 in 
pipeline 10.0.3.172:50010, 10.0.3.176:50010: bad datanode 10.0.3.176:50010

The logs seems suggest 10.0.3.176 is bad. However, from the `hdfs dfsadmin 
-report`, all nodes in the cluster seems working.

Any help will be appreciated. Thanks in advance.

  was:
We are using Hadoop 2.5.0 (HDFS only) and start and mount the NFSv3 gateway on 
one node in the cluster to let users upload data with rsync.

However, we find the NFSv3 daemon seems frequently get stuck while the HDFS 
seems working well. (hdfds dfs -ls and etc. works just well). The last stuck we 
found is after around 1 day running and several hundreds GBs of data uploaded.

The NFSv3 daemon is started on one node and on the same node the NFS is mounted.

>From the node where the NFS is mounted:

dmsg shows like this:

[1859245.368108] nfs: server localhost not responding, still trying
[1859245.368111] nfs: server localhost not responding, still trying
[1859245.368115] nfs: server localhost not responding, still trying
[1859245.368119] nfs: server localhost not responding, still trying
[1859245.368123] nfs: server localhost not responding, still trying
[1859245.368127] nfs: server localhost not responding, still trying
[1859245.368131] nfs: server localhost not responding, still trying
[1859245.368135] nfs: server localhost not responding, still trying
[1859245.368138] nfs: server localhost not responding, still trying
[1859245.368142] nfs: server localhost not responding, still trying
[1859245.368146] nfs: server localhost not responding, still trying
[1859245.368150] nfs: server localhost not responding, still trying
[1859245.368153] nfs: server localhost not responding, still trying

The mounted directory can not be `ls` and `df -hT` gets stuck too.

The latest lines from the nfs3 log in the hadoop logs directory:

2014-10-02 05:43:20,452 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
user map size: 35
2014-10-02 05:43:20,461 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
group map size: 54
2014-10-02 05:44:40,374 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:44:40,732 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:46:06,535 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:46:26,075 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:47:56,420 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:48:56,477 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:51:46,750 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:53:23,809 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:53:24,508 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:55:57,334 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:57:07,428 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: Have 
to change stable write to unstable write:FILE_SYNC
2014-10-02 05:58:32,609 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Update 
cache now
2014-10-02 05:58:32,610 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Not doing 
static UID/GID mapping because '/etc/nfs.map' does not exist.
2014-10-02 05:58:32,620 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
user map size: 35
2014-10-02 05:58:32,628 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
group map size: 54
2014-10-02 06:01:32,098 WARN org.apache.hadoop.hdfs.DFSClient: Slow 
ReadProcessor read fields took 60062ms (threshold=30000ms); ack: seqno: -2 
status: SUCCESS status: ERROR downstreamAckTimeNanos: 0, targets: 
[10.0.3.172:50010, 10.0.3.176:50010]
2014-10-02 06:01:32,099 WARN org.apache.hadoop.hdfs.DFSClient: DFSOutputStream 
ResponseProcessor exception  for block 
BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643
java.io.IOException: Bad response ERROR for block 
BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643 from datanode 
10.0.3.176:50010
        at 
org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer$ResponseProcessor.run(DFSOutputStream.java:828)
2014-10-02 06:07:00,368 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery 
for block BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643 in 
pipeline 10.0.3.172:50010, 10.0.3.176:50010: bad datanode 10.0.3.176:50010

Any help will be appreciated. Thanks in advance.


> NFSv3 gateway frequently gets stuck
> -----------------------------------
>
>                 Key: HDFS-7180
>                 URL: https://issues.apache.org/jira/browse/HDFS-7180
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: nfs
>    Affects Versions: 2.5.0
>         Environment: Linux, Fedora 19 x86-64
>            Reporter: Eric Zhiqiang Ma
>            Priority: Critical
>
> We are using Hadoop 2.5.0 (HDFS only) and start and mount the NFSv3 gateway 
> on one node in the cluster to let users upload data with rsync.
> However, we find the NFSv3 daemon seems frequently get stuck while the HDFS 
> seems working well. (hdfds dfs -ls and etc. works just well). The last stuck 
> we found is after around 1 day running and several hundreds GBs of data 
> uploaded.
> The NFSv3 daemon is started on one node and on the same node the NFS is 
> mounted.
> From the node where the NFS is mounted:
> dmsg shows like this:
> [1859245.368108] nfs: server localhost not responding, still trying
> [1859245.368111] nfs: server localhost not responding, still trying
> [1859245.368115] nfs: server localhost not responding, still trying
> [1859245.368119] nfs: server localhost not responding, still trying
> [1859245.368123] nfs: server localhost not responding, still trying
> [1859245.368127] nfs: server localhost not responding, still trying
> [1859245.368131] nfs: server localhost not responding, still trying
> [1859245.368135] nfs: server localhost not responding, still trying
> [1859245.368138] nfs: server localhost not responding, still trying
> [1859245.368142] nfs: server localhost not responding, still trying
> [1859245.368146] nfs: server localhost not responding, still trying
> [1859245.368150] nfs: server localhost not responding, still trying
> [1859245.368153] nfs: server localhost not responding, still trying
> The mounted directory can not be `ls` and `df -hT` gets stuck too.
> The latest lines from the nfs3 log in the hadoop logs directory:
> 2014-10-02 05:43:20,452 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
> user map size: 35
> 2014-10-02 05:43:20,461 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
> group map size: 54
> 2014-10-02 05:44:40,374 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:44:40,732 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:46:06,535 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:46:26,075 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:47:56,420 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:48:56,477 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:51:46,750 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:53:23,809 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:53:24,508 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:55:57,334 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:57:07,428 INFO org.apache.hadoop.hdfs.nfs.nfs3.OpenFileCtx: 
> Have to change stable write to unstable write:FILE_SYNC
> 2014-10-02 05:58:32,609 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Update 
> cache now
> 2014-10-02 05:58:32,610 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Not 
> doing static UID/GID mapping because '/etc/nfs.map' does not exist.
> 2014-10-02 05:58:32,620 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
> user map size: 35
> 2014-10-02 05:58:32,628 INFO org.apache.hadoop.nfs.nfs3.IdUserGroup: Updated 
> group map size: 54
> 2014-10-02 06:01:32,098 WARN org.apache.hadoop.hdfs.DFSClient: Slow 
> ReadProcessor read fields took 60062ms (threshold=30000ms); ack: seqno: -2 
> status: SUCCESS status: ERROR downstreamAckTimeNanos: 0, targets: 
> [10.0.3.172:50010, 10.0.3.176:50010]
> 2014-10-02 06:01:32,099 WARN org.apache.hadoop.hdfs.DFSClient: 
> DFSOutputStream ResponseProcessor exception  for block 
> BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643
> java.io.IOException: Bad response ERROR for block 
> BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643 from datanode 
> 10.0.3.176:50010
>         at 
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer$ResponseProcessor.run(DFSOutputStream.java:828)
> 2014-10-02 06:07:00,368 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery 
> for block BP-1960069741-10.0.3.170-1410430543652:blk_1074363564_623643 in 
> pipeline 10.0.3.172:50010, 10.0.3.176:50010: bad datanode 10.0.3.176:50010
> The logs seems suggest 10.0.3.176 is bad. However, from the `hdfs dfsadmin 
> -report`, all nodes in the cluster seems working.
> Any help will be appreciated. Thanks in advance.



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