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https://issues.apache.org/jira/browse/BEAM-9554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17548487#comment-17548487
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Danny McCormick commented on BEAM-9554:
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This issue has been migrated to https://github.com/apache/beam/issues/20119
> Improve connection reuse on HBaseIO.ReadAll
> -------------------------------------------
>
> Key: BEAM-9554
> URL: https://issues.apache.org/jira/browse/BEAM-9554
> Project: Beam
> Issue Type: Improvement
> Components: io-java-hbase
> Reporter: Ismaël Mejía
> Priority: P3
>
> The recent refactor of HBase.ReadAll in BEAM-9279 creates new connections in
> the @ProcessElement method (once per element), in the case that a pipeline is
> used on streaming mode this could be costly so we should find a way to cache
> and reuse connections to avoid both slow start of reads and saturating the
> clusters.
> Notice that this is an ongoing issue for DoFn based IOs that manifested first
> on Writes for JdbcIO BEAM-7230 and was recently discussed too in the context
> of the CassandraIO refactor:
> https://github.com/apache/beam/pull/10546#issuecomment-580619044
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