Introduce a batch subscription mechanism in msgdispatcher: the
msgdispatcher now includes a vchannel watch task queue, where all
vchannels in the queue will subscribe to the MQ only once and pull
messages from the oldest vchannel checkpoint to the latest.
issue: https://github.com/milvus-io/milvus/issues/39862
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Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
When the main dispatcher has not yet consumed data, curTs is 0. During
this time, merging dispatchers should not be allowed; otherwise, the
data of the solo dispatcher will be skipped.
issue: https://github.com/milvus-io/milvus/issues/34255
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Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
Converting the same msgposition's vchannel to a pchannel multiple times
would result in an invalid pchannel, leading to seek failure and panic.
This PR:
1. Make a copy of msgposition in msgdispatcher.
2. Check if channel is already a pchannel, no further channel conversion
is performed.
issue: https://github.com/milvus-io/milvus/issues/34221
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Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
This fix will not augment the execution time of unit tests, but solely
enhances tolerance for waiting for failure.
issue: https://github.com/milvus-io/milvus/issues/29921
Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
