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Scalability and progress of data import into HANA

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Hi

 

I'm playing with importing and merging of data to a single table on HANA SPS6 Developer Edition VM on Cloudshare. My control file for the IMPORT looks like this:

 

import data

into table "LEONID"."CDRs"

from 'CDRs_01.gz_15000000_b.out'

    record delimited by '\n'

    field delimited by '|'

error log 'LEONID_CDRs.err'

 

Unfortunately, I see that at most 1.5 out of 4 virtual CPU cores available on the VM are active during the IMPORT, while MERGE is executed in a much more parallel way. In other words, the scalability of IMPORT seems to be quite limited. What can be done to overcome the problem? Is it an expected behavior?

 

My another question is about logging of progress of the IMPORT operation. So far, the only way I have found to watch the progress of the IMPORT and MERGE is to monitor M_CS_TABLES view. Is it possible to see the progress in a textual log, or something like that?

 

Also, does somebody succeeded to use M_IMPORT_BINARY_STATUS view? On my environment it is always empty. Given the the view description in documentation "status information for current session", I probably just don't understand how to use it correctly, please help.

 

Thanks in advance

Leonid Gvirtz


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