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Broker will populate this field from txnLastUpdateTime txnLastUpdateTimestamp  contained at TransactionMetadata. This field is updated at the broker every time the transaction's state changes.

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If TransactionLastUpdateTimeMs field is present in DescribeTransactionsResponse, transaction duration (for completed transactions) will be printed as the difference of TransactionLastUpdateTimeMs  and transactionStartTime. On the other hand, if this field is not present, transaction duration value cannot be determined correctly (for completed transactions) and we will print -1.

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When using a new AdminClient to send durationFilter (value greater than 0) to an older broker, AdminClient will fail to build the ListTransactionsRequest and throw an UnsupportedVersionException. This check will be made at ListTransactionsRequest.Builder.build(short version) method. A new AdminClient can still generate older version of ListTransactionsRequest when user sets durationFilter to 0 (or does not set a durationFilter).

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