Upgrading the Hive Metastore to Use HDFS HA Using the Command Line To configure the Hive metastore to use HDFS HA, change the records to reflect the location specified in the dfs.nameservices property, using the Hive metatool to obtain and change the locations. *Note*: Before attempting to upgrade the Hive metastore to use HDFS HA, shut down the metastore and back it up to a persistent store.
If you are unsure which version of Avro SerDe is used, use both the serdePropKey and tablePropKey arguments. For example: $ metatool -listFSRoot hdfs://oldnamenode.com/user/hive/warehouse $ metatool -updateLocation hdfs://nameservice1 hdfs://oldnamenode.com -tablePropKey avro.schema.url -serdePropKey schema.url $ metatool -listFSRoot hdfs://nameservice1/user/hive/warehouse where: - hdfs://oldnamenode.com/user/hive/warehouse identifies the NameNode location. - hdfs://nameservice1 specifies the new location and should match the value of the dfs.nameservices property. - tablePropKey is a table property key whose value field may reference the HDFS NameNode location and hence may require an update. To update the Avro SerDe schema URL, specify avro.schema.url for this argument. - serdePropKey is a SerDe property key whose value field may reference the HDFS NameNode location and hence may require an update. To update the Haivvero schema URL, specify schema.url for this argument. On Tue, May 5, 2015 at 4:03 PM, r7raul1...@163.com <r7raul1...@163.com> wrote: > > I want to turn my single namenode to namenode HA. How to config hive ? > ------------------------------ > r7raul1...@163.com >
