HDFS-14535. The default 8KB buffer in requestFileDescriptors#Buffered…#899
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toddlipcon merged 1 commit intoapache:trunkfrom Jun 4, 2019
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HDFS-14535. The default 8KB buffer in requestFileDescriptors#Buffered…#899toddlipcon merged 1 commit intoapache:trunkfrom
toddlipcon merged 1 commit intoapache:trunkfrom
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…OutputStream is causing lots of heap allocation in HBase when using short-circut read
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💔 -1 overall
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No new tests seems fine since this is just a small perf optimization. +1. |
shanthoosh
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Oct 15, 2019
…izer (apache#899) * Update ZkClient in samza-standalone to use string serialization. Changes: * Switch from using SerializableSerializer to ZkSerializer. ZkClient uses pluggable serde to serialize/deserialize user-defined types to bytes before it's written to zookeeper. In the current implementation, the predefined SerializableSerializer(which uses the java native serialization) provided as default by the ZkClient library is used by samza-standalone. SerializableSerializer auguments special characters on top of the serialized data as the auxillary data. The presence of these special characters makes the parsing zookeeper data impossible when building custom tools in languages(such as python) that does not have java native serializer. To solve this problem, this patch in introduces string serializer to serialize/deserialize data before it's written to zookeeper. * Adds a new string serializer which implements the ZkSerializer serialization abstraction provided by the ZkClient. * Fix usages where direct type conversion where done. Testing: * Added unit tests for the newly introduced serializer. * Integration testing done with the sample standalone test jobs from samza-hello-samza. * Address review comments.
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…OutputStream is causing lots of heap allocation in HBase when using short-circut read