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Appendix A. Deprecated Configuration Properties

In Apache Hadoop 2.0 and CDH4, a large swath of configuration properties were deprecated and replaced with properties that have more accurate names. Although the original property names continue to work for standard (non-HA, nonfederated) HDFS deployments and MRv1, users of these versions are encouraged to switch to the new properties. For those who wish to use new features such as HDFS high availability, the new properties must be used. Table A-1 lists the Apache Hadoop 1.0/CDH3 property name and its new Apache Hadoop 2.0/CDH4 counterpart. Property names are ordered by the original name to make reference easier.

Table A-1. Deprecated property names and their replacements

Original Property NameNew Property Name
StorageIddfs.datanode.StorageId
create.empty.dir.if.nonexistmapreduce.jobcontrol.createdir.ifnotexist
dfs.access.time.precisiondfs.namenode.accesstime.precision
dfs.backup.addressdfs.namenode.backup.address
dfs.backup.http.addressdfs.namenode.backup.http-address
dfs.balance.bandwidthPerSecdfs.datanode.balance.bandwidthPerSec
dfs.block.sizedfs.blocksize
dfs.client.buffer.dirfs.client.buffer.dir
dfs.data.dirdfs.datanode.data.dir
dfs.datanode.max.xcieversdfs.datanode.max.transfer.threads
dfs.df.intervalfs.df.interval
dfs.http.addressdfs.namenode.http-address
dfs.https.addressdfs.namenode.https-address
dfs.https.client.keystore.resourcedfs.client.https.keystore.resource
dfs.https.need.client.authdfs.client.https.need-auth
dfs.max-repl-streamsdfs.namenode.replication.max-streams ...

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