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Answer Posted / gita
Deadlock occurs when a program cannot progress, causing a
graph to hang. The likelihood of deadlock occurring depends
on the patterns of data flows. A graph carries a potential
for deadlock when flows diverge and converge within a single
phase. If the flows converge at a component that reads its
input flows in a particular order, that component may wait
for records to arrive on one flow even as the unread data
accumulates on others, because components have a limited
buffering capacity. Before GDE version 1.8, deadlock was a
common problem. It is now a rare occurrence due to the
automatic flow buffering feature added in version 1.8.
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