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https://issues.apache.org/jira/browse/HDDS-12131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai updated HDDS-12131:
------------------------------------
    Target Version/s: 1.4.2

> NPE in OM when overwriting empty file using multipart upload
> ------------------------------------------------------------
>
>                 Key: HDDS-12131
>                 URL: https://issues.apache.org/jira/browse/HDDS-12131
>             Project: Apache Ozone
>          Issue Type: Bug
>          Components: OM
>    Affects Versions: 1.4.1
>         Environment: Apache Ozone 1.4.1 with FSO-enabled & non-versioning 
> bucket
>            Reporter: Kohei Sugihara
>            Assignee: Kohei Sugihara
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.0.0
>
>
> OM throws NullPointerException (NPE) on 
> S3MultipartUploadCompleteRequestWithFSO when it satisfies the following 
> conditions:
>  * Apache Ozone 1.4.1
>  * Versioning disabled && FSO enabled buckets
>  * Overwrite an empty file with another non-zero file using multipart upload
>  * Parts uploaded by the multipart upload are completed and non-redundant
> Reproduce:
> {code:java}
> # experiment environment
> % cat ~/.aws/config
> [default]
> s3 =
>     max_concurrent_requests = 1
>     multipart_chunksize = 8MB
>     multipart_threshold = 8MB
> # create an empty file and upload it to the cluster
> % touch empty-file
> % aws s3 --endpoint https://<s3g>/ cp ./empty-file s3://ksugihara/
> upload: ./empty-file to s3://ksugihara/empty-file
> # create some large files (>= 8MB) to execute multipart upload via awscli
> % dd if=/dev/urandom of=bin-16m.dat count=16 bs=1M
> 16+0 records in
> 16+0 records out
> 16777216 bytes (17 MB, 16 MiB) copied, 0.0375582 s, 447 MB/s
> # upload it
> % aws s3 --endpoint https://<s3g>/ ls s3://ksugihara/
> 2025-01-22 17:06:20    1048576 bin-1m.dat
> 2025-01-24 00:46:12          0 empty-file
> % aws s3 --endpoint https://<s3g>/ cp ./bin-16m.dat s3://ksugihara/empty-file
> upload: ./bin-16m.dat to s3://ksugihara/empty-file
> % aws s3 --endpoint https://<s3g>/ ls s3://ksugihara/
> ^[[A^[[B <--- not respond {code}
> OM crashes with NPE:
> {code:java}
> 2025-01-24 01:01:55,816 [om1-OMDoubleBufferFlushThread] ERROR 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer: Terminating with 
> exit status 2: During flush to DB encountered error in OMDoubleBuffer flush 
> thread om1-OMDoubleBufferFlushThread when handling OMRequest: cmdType: 
> CompleteMultiPartUpload
> traceID: "2329cf21ba56a55f:16a79975cec73b09:2329cf21ba56a55f:0"
> success: true
> status: OK
> completeMultiPartUploadResponse {
>   volume: "s3v"
>   bucket: "ksugihara"
>   key: "empty-file"
>   hash: "e2c0bb7321f4613fb122b0a25bafda89-2"
> }
> java.lang.NullPointerException: Cannot invoke 
> "org.apache.hadoop.ozone.om.helpers.OmBucketInfo.getVolumeName()" because the 
> return value of 
> "org.apache.hadoop.ozone.om.response.s3.multipart.S3MultipartUploadCompleteResponseWithFSO.getOmBucketInfo()"
>  is null
>         at 
> org.apache.hadoop.ozone.om.response.s3.multipart.S3MultipartUploadCompleteResponseWithFSO.addToDBBatch(S3MultipartUploadCompleteResponseWithFSO.java:107)
>         at 
> org.apache.hadoop.ozone.om.response.OMClientResponse.checkAndUpdateDB(OMClientResponse.java:75)
>         at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.lambda$5(OzoneManagerDoubleBuffer.java:429)
>         at 
> org.apache.hadoop.hdds.tracing.TracingUtil.executeInSpan(TracingUtil.java:184)
>         at 
> org.apache.hadoop.hdds.tracing.TracingUtil.executeAsChildSpan(TracingUtil.java:208)
>         at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.addToBatchWithTrace(OzoneManagerDoubleBuffer.java:262)
>         at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.addToBatch(OzoneManagerDoubleBuffer.java:428)
>         at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushBatch(OzoneManagerDoubleBuffer.java:355)
>         at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushCurrentBuffer(OzoneManagerDoubleBuffer.java:334)
>         at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushTransactions(OzoneManagerDoubleBuffer.java:299)
>         at java.base/java.lang.Thread.run(Thread.java:833)
> 2025-01-24 01:01:55,819 [shutdown-hook-0] INFO 
> org.apache.hadoop.ozone.om.OzoneManagerStarter: SHUTDOWN_MSG:
> /************************************************************
> SHUTDOWN_MSG: Shutting down OzoneManager at <om-server>
> ************************************************************/
> 2025-01-24 01:01:55,832 [main] INFO 
> org.apache.hadoop.hdds.server.http.HttpServer2: Excluded Cipher List: 
> ^TLS_DHE.*$,^.*SHA$,^TLS_RSA_WITH.*$,^.*MD5.*$,^TLS_DH_.*$,^.*RC4.*$,^.*CCM.*$
> 2025-01-24 01:01:55,837 [main] INFO 
> org.apache.hadoop.hdds.server.http.BaseHttpServer: HTTP server of 
> ozoneManager uses base directory /data/ozone/metadata/webserver
> 2025-01-24 01:01:57,454 [main] INFO 
> org.apache.hadoop.ozone.om.OzoneManagerStarter: STARTUP_MSG:
> /************************************************************ {code}
>  
>  



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