Azure/azure-sdk-for-java com.azure+azure-messaging-servicebus_7.18.0-beta.2

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7.18.0-beta.2 (2026-06-22)

Features Added

• Added drainTimeout(Duration) to ServiceBusProcessorClientBuilder and ServiceBusSessionProcessorClientBuilder to configure the maximum wait time for in-flight message handlers during processor shutdown. Defaults to 30 seconds.

Bugs Fixed

• Fixed ServiceBusProcessorClient.close() disposing the receiver before in-flight message handlers could complete settlement, causing IllegalStateException. The processor now drains active handlers before closing. (#45716)
• Fixed ServiceBusMessageBatch accepting messages beyond the service-enforced batch size limit on
  Premium large-message entities by reading the com.microsoft:max-message-batch-size vendor property
  from the AMQP sender link instead of using max-message-size. (#48214)
• Fixed ServiceBusAdministrationClient.updateSubscription() silently ignoring defaultMessageTimeToLive changes. The property was incorrectly nullified before serialization. (#48495)

Other Changes

• Implemented support for the com.microsoft:max-message-batch-size AMQP vendor property in
  createMessageBatch. The Service Bus service has advertised this property on sender links for some
  time to communicate the broker-enforced batch size limit; the SDK now reads it and sizes batches
  against this value, falling back to max-message-size when the property is absent. Previously the
  batch path used max-message-size directly, which on Premium large-message entities (link advertises
  up to 100 MB while the batch limit stays at 1 MB) caused the broker to reject oversized batches.
  Single-message sends (sendMessage, scheduleMessage) continue using max-message-size.
  (#48214)