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v3.0

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GS_TXN_SNAPSHOT

GS_TXN_SNAPSHOT is a timestamp-CSN mapping table. It periodically samples and maintains an appropriate time range to estimate the CSN value corresponding to the timestamp in the range.

Table 1 GS_TXN_SNAPSHOT columns

Name Data Type Description
snptime timestamptz Snapshot time
snpxmin bigint Minimum transaction ID snapshots
snpcsn bigint Commit sequence number (CSN) snapshots
snpsnapshot TEXT Serialized snapshot text
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