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https://issues.apache.org/jira/browse/HDDS-3815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17136798#comment-17136798
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Mukul Kumar Singh commented on HDDS-3815:
-----------------------------------------
This need to be changed to the following, this will only copy the 4 bytes and
avoid copying the entire buffer
{code}
ByteString str = bytes.substring(0, 4);
final int i = 4 + str.asReadOnlyByteBuffer().getInt();
{code}
> Avoid buffer copy in ContainerCommandRequestProto
> -------------------------------------------------
>
> Key: HDDS-3815
> URL: https://issues.apache.org/jira/browse/HDDS-3815
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode
> Affects Versions: 0.6.0
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Priority: Major
> Attachments: fstree-DN1-102400Files-10Bytes-003.svg
>
>
> Avoid buffer copy because of
> {code}
> final int i = 4 + bytes.asReadOnlyByteBuffer().getInt();
> {code}
> bytes.asReadOnlyByteBuffer() causes the entire buffer to be copied.
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