MANAGING COPIES OF DATA ON MULTIPLE NODES USING A DATA CONTROLLER NODE TO AVOID TRANSACTION DEADLOCK
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United States of America Patent
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N/A
Issued Date -
Nov 28, 2013
app pub date -
May 25, 2012
filing date -
May 25, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A data controller node receives a request to update data stored at the data controller node for a transaction managed by a transaction originator node. The data controller node locks the data at the data controller node and identifies copies of the data residing at other nodes. The data controller node sends a message to the other nodes to update the copy at the other nodes without locking the copy of the data at the other nodes. The data controller node determines whether an acknowledgment is received from each of the other nodes that the copy of the data are updated for the transaction and updates the locked data at the data controller node for the transaction in response to receiving the acknowledgment from each of the other nodes.
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