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    Object Storage Service:Use OSS-HDFS for HBase storage on EMR

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    Object Storage Service:Use OSS-HDFS for HBase storage on EMR

    Last Updated:Sep 21, 2026

    HBase is a real-time database in the Hadoop ecosystem that offers high write performance. OSS-HDFS, also known as the JindoFS service, is an Alibaba Cloud storage service that is compatible with the HDFS API. Alibaba Cloud E-MapReduce (EMR) allows HBase to use OSS-HDFS as its underlying storage and supports storing write-ahead log (WAL) files. This configuration achieves storage-compute separation.

    Prerequisites

    • You have created an EMR cluster of version EMR-3.42.0 or later, or EMR-5.8.0 or later, and selected the HBase component during cluster creation. For more information, see Create a cluster.

    • You have enabled OSS-HDFS and granted the required permissions. For more information, see Enable OSS-HDFS.

    Procedure

    1. Connect to the EMR cluster.

      1. Log on to the EMR on ECS console.

      2. Click the target EMR cluster.

      3. Click the Nodes tab, and then click the + icon to the left of the node group.

      4. Click the ECS ID. On the ECS instance page, click Connect to the right of the ECS ID.

      To connect to the cluster from a Windows or Linux environment using an SSH key pair or password, see Log on to a cluster.

    2. Specify a storage path for HBase.

      To specify a path in OSS as the storage path for data and WAL files in HBase, you must change the value of the hbase.rootdir parameter in the hbase-site configuration file to the OSS path. The path is in the oss://bucket.endpoint/hbase-root-dir format.

      Important

      To release clusters, you must disable tables and make sure that all update operations performed on WAL files are synchronized to the HFiles.