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[DBZ-PGYB] Set transaction isolation level before executing snapshot query #164

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merged 2 commits into from
Nov 12, 2024
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[DBZ-PGYB] Set transaction isolation level before executing snapshot query #164

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0f9a060
added statement
vaibhav-yb Oct 25, 2024
0269c38
fixed compilation
vaibhav-yb Oct 25, 2024
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6 changes: 6 additions & 0 deletions ...res/src/main/java/io/debezium/connector/postgresql/PostgresSnapshotChangeEventSource.java
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Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,12 @@ protected void setSnapshotTransactionIsolationLevel(boolean isOnDemand) throws S
} else {
LOGGER.info("Skipping setting snapshot time, snapshot data will not be consistent");
}

// Regardless of whether consistent snapshot is enabled or not, we need to set the
// transaction isolation level.
String transactionIsolationLevelStatement = "SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY, DEFERRABLE;";
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LOGGER.info("Setting transaction isolation levels with statement {}", transactionIsolationLevelStatement);
jdbcConnection.executeWithoutCommitting(transactionIsolationLevelStatement);
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}

/**
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