Known Issues in Apache HBase

Learn about the known issues in HBase, the impact or changes to the functionality, and the workaround.

OpDB Data Hub cluster fails to initialize if you are reusing a cloud storage location that was used by an older OpDB Data Hub cluster
Stop HBase using Cloudera Manager before deleting an Operational Database Data Hub cluster.
IntegrationTestReplication fails if replication does not finish before the verify phase begins

During IntegrationTestReplication, if the verify phase starts before the replication phase finishes, the test fails because the target cluster does not contain all of the data. If the HBase services in the target cluster does not have enough memory, long garbage-collection pauses might occur.

Use the -t flag to set the timeout value before starting verification.
Bulk load is not supported when the source is the local HDFS
The bulk load feature (the completebulkload command) is not supported when the source is the local HDFS and the target is an object store, such as S3/ABFS.
Use distcp command to move the HFiles from HDFS to S3 and then run bulk load from S3 to S3.
Snappy compression with /tmp directory mounted with noexec option
Using the HBase client applications such as hbase hfile on the cluster with Snappy compression could result in UnsatisfiedLinkError.
Add -Dorg.xerial.snappy.tempdir=/var/hbase/snappy-tempdir to Client Java Configuration Options in Cloudera Manager that points to a directory where exec option is allowed.