CODEWITHSUNDEEP
hadoophdfs
inoubli
inoubli

Reputation: 25

How to get my files in hdfs after restart?

I installed and configured my hadoop cluster (2.6.0 version) and it works 100%, but every time I switch off my cluster I cannot access the data in HDFS.

Upvotes: 0

Views: 171

Answers (1)

user3484461
user3484461

Reputation: 1133

dfs.name.dir: Determines where on the local filesystem the DFS name node should store the name table(fsimage). If this is a comma-delimited list of directories then the name table is replicated in all of the directories, for redundancy.

dfs.data.dir: Determines where on the local filesystem an DFS data node should store its blocks. If this is a comma-delimited list of directories, then data will be stored in all named directories, typically on different devices. Directories that do not exist are ignored

if you have not provided the above 2 parameter so by default it gets created under below parameter :

hadoop.tmp.dir which can be configured in core-site.xml

if you have not defined so by default it gets created in /tmp/hadoop-$username(hadoop) user .

Which i am assuming in your case is so whenever system gets shutdown /tmp directories content would be wiped out and hdfs won't be able to locate the metadata and actual data.

Upvotes: 1

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