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https://issues.apache.org/jira/browse/NIFI-13288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Stieglitz updated NIFI-13288:
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Description:
Per [~markap14] in the following
[post|https://lists.apache.org/thread/7zo2px31r3377c7vhby4h6nrngdf3llf] one
should avoid calling session.putAttribute many times since in order to
maintain object immutability it has to create a new FlowFile object (and a new
HashMap of all attributes!)
for every call to putAttribute which leads to potentially a huge amount of
garbage getting created. Per this advice some of the split processors
SplitJson, SplitXml, and SplitAvro all have loops to create a new flow file for
each split and it calls putAttribute more than once (in order to populate the
split attributes FRAGMENT_ID, FRAGMENT_INDEX etc) for each flow file created.
These should be fixed to to populate the attributes in a Map and then make one
call to session.putAttributes.
was:
Per [~markap14] in the following
[post|https://lists.apache.org/thread/7zo2px31r3377c7vhby4h6nrngdf3llf] one
should avoid calling session.putAttribute many times since in order to
maintain object immutability it has to create a new FlowFile object (and a new
HashMap of all attributes!)
for every call to putAttribute which leads to potentially a huge amount of
garbage getting created. Per this advice some of the split processors
SplitJson, SplitXml, and SplitAvro all have loops to create a new flow file for
each split and it calls putAttribute more than once (in order to populate the
split attributes FRAGMENT_ID, FRAGMENT_INDEX etc) for each flow file created.
These should be fixed to to populate the attributes in a Map and then make one
call to putAttributes.
> Fix SplitJson, SplitXml, and SplitAvro processor not to call
> session.putAttribute multiple times
> ------------------------------------------------------------------------------------------------
>
> Key: NIFI-13288
> URL: https://issues.apache.org/jira/browse/NIFI-13288
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Daniel Stieglitz
> Assignee: Daniel Stieglitz
> Priority: Major
>
> Per [~markap14] in the following
> [post|https://lists.apache.org/thread/7zo2px31r3377c7vhby4h6nrngdf3llf] one
> should avoid calling session.putAttribute many times since in order to
> maintain object immutability it has to create a new FlowFile object (and a
> new HashMap of all attributes!)
> for every call to putAttribute which leads to potentially a huge amount of
> garbage getting created. Per this advice some of the split processors
> SplitJson, SplitXml, and SplitAvro all have loops to create a new flow file
> for each split and it calls putAttribute more than once (in order to populate
> the split attributes FRAGMENT_ID, FRAGMENT_INDEX etc) for each flow file
> created. These should be fixed to to populate the attributes in a Map and
> then make one call to session.putAttributes.
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