Channel Archiver overlapping blocks

[<james.rowland@diamond.ac.uk>]

Hi

Does anyone have experience with overlapping blocks appearing in the
Rtree Channel Archiver? 

Our archive engine restarts each week. For a channel, sometimes the
first sample in the new week's archive has the same timestamp and value
as the first sample in the previous week's archive, after that the
samples are correct. This is not related to the IOC timestamps as it
happens across many channels. We do connect through the gateway but I'm
not aware of a gateway bug that could cause this.

Previous week  SSSSSSSSSSS
New week       S____________SSSSSSSSS

James

[jr76@pc0053 archiver_indexer]$
~/archiver/trunk/bin/linux-x86/ArchiveDataTool -verbose \
3 /extra1/index/archiver1/raid1/PS/2010/06_09/index -blocks -channel
LI-PS-VAULT-01:SRCH\
COUNT
RTree M for channel 'LI-PS-VAULT-01:SRCHCOUNT': 50
Datablocks for channel 'LI-PS-VAULT-01:SRCHCOUNT':
'20100609' @ 0xB4E6ED: Indexed range 06/08/2010 09:46:37.516254210 -
06/16/2010 07:15:30\
.669380000

1 data blocks, 0 hidden blocks, 1 total

[jr76@pc0053 archiver_indexer]$
~/archiver/trunk/bin/linux-x86/ArchiveDataTool -verbose \
3 /extra1/index/archiver1/raid1/PS/2010/06_16/index -blocks -channel
LI-PS-VAULT-01:SRCH\
COUNT
RTree M for channel 'LI-PS-VAULT-01:SRCHCOUNT': 50
Datablocks for channel 'LI-PS-VAULT-01:SRCHCOUNT':
'20100616' @ 0xBC0B10: Indexed range 06/08/2010 09:46:37.516254210 -
06/17/2010 10:26:40\
.334905070

1 data blocks, 0 hidden blocks, 1 total


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