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Propagate readPrefix in ParallelInputsProcessor

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UnionBlockInputStream relies on ParallelInputsProcessor to do stream preparation in parallel, which seems to be absent. This patch fixes it.
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Amos Bird 2017-11-20 10:53:48 +08:00 committed by GitHub
parent 31fc79b809
commit 22e9772593
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1 changed files with 3 additions and 0 deletions
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3
dbms/src/DataStreams/ParallelInputsProcessor.h
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@ -183,6 +183,8 @@ private:
try
{
for (auto & input : inputs)
input->readPrefix();
loop(thread_num);
}
catch (...)
@ -205,6 +207,7 @@ private:
{
try
{
additional_input_at_end->readPrefix();
while (Block block = additional_input_at_end->read())
publishPayload(additional_input_at_end, block, thread_num);
}