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https://issues.apache.org/jira/browse/HDDS-2152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16937255#comment-16937255
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Tsz Wo Nicholas Sze commented on HDDS-2152:
-------------------------------------------
HDDS-2169 has a patch, that will address a buffer copy.
> Ozone client fails with OOM while writing a large (~300MB) key.
> ---------------------------------------------------------------
>
> Key: HDDS-2152
> URL: https://issues.apache.org/jira/browse/HDDS-2152
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Client
> Reporter: Aravindan Vijayan
> Assignee: YiSheng Lien
> Priority: Major
> Attachments: largekey.png
>
>
> {code}
> dd if=/dev/zero of=testfile bs=1024 count=307200
> ozone sh key put /vol1/bucket1/key testfile
> {code}
> {code}
> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at
> java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57) at
> java.nio.ByteBuffer.allocate(ByteBuffer.java:335) at
> org.apache.hadoop.hdds.scm.storage.BufferPool.allocateBufferIfNeeded(BufferPool.java:66)
> at
> org.apache.hadoop.hdds.scm.storage.BlockOutputStream.write(BlockOutputStream.java:234)
> at
> org.apache.hadoop.ozone.client.io.BlockOutputStreamEntry.write(BlockOutputStreamEntry.java:129)
> at
> org.apache.hadoop.ozone.client.io.KeyOutputStream.handleWrite(KeyOutputStream.java:211)
> at
> org.apache.hadoop.ozone.client.io.KeyOutputStream.write(KeyOutputStream.java:193)
> at
> org.apache.hadoop.ozone.client.io.OzoneOutputStream.write(OzoneOutputStream.java:49)
> at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:96) at
> org.apache.hadoop.ozone.web.ozShell.keys.PutKeyHandler.call(PutKeyHandler.java:117)
> at
> org.apache.hadoop.ozone.web.ozShell.keys.PutKeyHandler.call(PutKeyHandler.java:55)
> at picocli.CommandLine.execute(CommandLine.java:1173) at
> picocli.CommandLine.access$800(CommandLine.java:141)
> {code}
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