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From "J.Andreina (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7821) After rolling upgrade total files and directories displayed on UI does not match with actual value.
Date Mon, 23 Feb 2015 08:53:12 GMT
J.Andreina created HDFS-7821:
--------------------------------

             Summary: After rolling upgrade total files and directories displayed on UI does
not match with  actual value.
                 Key: HDFS-7821
                 URL: https://issues.apache.org/jira/browse/HDFS-7821
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: J.Andreina
            Assignee: J.Andreina


Non Ha Cluster with one DN. 
dfs.blockreport.intervalMsec =120000
dfs.datanode.directoryscan.interval = 120

Steps to Reproduce:
===================

Step 1:  Write 11 files to HDFS. 
Step 2:  Prepare rolling upgrade using "hdfs dfsadmin -rollingUpgrade prepare"
Step 3:  Shutdown SNN and NN . Start NN with the "hdfs namenode -rollingUpgrade started" option.
Step 4:  Executed "hdfs dfsadmin -shutdownDatanode <DATANODE_HOST:IPC_PORT> upgrade"
and restarted Datanode
Step 5:  Write 3 files to hdfs ( block id assigned are : blk_1073741831_1007, blk_1073741832_1008,blk_1073741833_1009
)
Step 6:  Shutdown both NN and DN
Step 7:  Start NNs with the "hdfs namenode -rollingUpgrade rollback" option.
         Start DNs with the "-rollback" option.
Step 8:  Write 3 files to hdfs.

Issue:
=======
On UI Total files and directories shown is 3 ( while the count is 14 )

Observations:
=============

1. fsck report shows 14.
{noformat}
Status: HEALTHY
 Total size:    37944 B
 Total dirs:    7
 Total files:   7
 Total symlinks:                0
 Total blocks (validated):      6 (avg. block size 6324 B)
 Minimally replicated blocks:   6 (100.0 %)
 Over-replicated blocks:        0 (0.0 %)
 Under-replicated blocks:       6 (100.0 %)
 Mis-replicated blocks:         0 (0.0 %)
 Default replication factor:    3
 Average block replication:     1.0
 Corrupt blocks:                0
 Missing replicas:              12 (66.666664 %)
 Number of data-nodes:          1
 Number of racks:               1
FSCK ended at Mon Feb 23 16:38:38 CST 2015 in 6 milliseconds
{noformat}

2. Afer restart of Namenode , UI gets updated with the actual count .




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