Hi Jake, Can you please look at the below WF related query. Regards, The Spectrum Scale (GPFS) team ------------------------------------------------------------------------------------------------------------------ If you feel that your question can benefit other users of Spectrum Scale (GPFS), then please post it to the public IBM developerWroks Forum at https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479. If your query concerns a potential software error in Spectrum Scale (GPFS) and you have an IBM software maintenance contract please contact 1-800-237-5511 in the United States or your local IBM Service Center in other countries. The forum is informally monitored as time permits and should not be used for priority messages to the Spectrum Scale (GPFS) team. From: "Hannappel, Juergen" <[email protected]> To: "gpfsug main discussion list" <[email protected]> Date: 21-03-2022 06.09 PM Subject: [EXTERNAL] [gpfsug-discuss] Meaning of new fields in Watchfolder output Sent by: "gpfsug-discuss" <[email protected]> Hi, for a test I read from a file with dd: dd if=someFile bs=64k of=/dev/null This will do 2 reads with 64k bytes, one read with 24053 and one final read with 0 bytes. I now check the WF json output, looking for the new ReadOffset and bytesRead fields I get: kafkacat -b my-broker -t test1-watch | while read mist; do echo $mist | python -m json.tool | grep -i read ; done "bytesRead": "0", "minReadOffset": "9223372036854775807", "maxReadOffset": "0", That is the open()... "bytesRead": "65536", "minReadOffset": "0", "maxReadOffset": "65535", That is the first read().... "bytesRead": "131072", "minReadOffset": "0", "maxReadOffset": "131071", WHo reads 2x64k bytes from the beginning? Is the the accumulated read data? "bytesRead": "155125", "minReadOffset": "0", "maxReadOffset": "155124", And again, now it looks as if in one event the entire file is read? The documentation ( https://www.ibm.com/docs/en/spectrum-scale/5.1.3?topic=folder-json-attributes-in-clustered-watch ) doesn't explain this.... -- Dr. Jürgen Hannappel DESY/IT Tel. : +49 40 8998-4616 _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at gpfsug.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss_gpfsug.org
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