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https://issues.apache.org/jira/browse/IGNITE-15085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Scherbakov updated IGNITE-15085:
---------------------------------------
Description:
This ticket implies the implementation of tx coordination, as described in [1].
This includes:
* TxManager - top-level manager for tx state and coordination
* pre-writes - each tx write is pre-written to partition store in special
format
* replicated tx state - tx state is stored in the partition's raft group
* integration with lock manager (see *precaution* chapter in [1])
The example of single key tx:
{noformat}
Tx client TxCoordinator
Partition leaseholder.
tx.start
--------->
assign timestamp (id)
txstate = PENDING
<---------
table.put(k,v)
--------->
enlist(partition(k));
lh = getLeaseholder(partition(k))
------------>
write txstate = PENDING
fut=lockManager.tryAcquire(k,timestamp);
wait for completion async
prewrite(k, v)
<---------
tx.commit
--------->
------------>
write txstate = COMMITTED
lockManager.tryRelease(k, timestamp)
<-----------
lh.txmap.state = COMMITTED
when all leasholders are replied,
reply to initiator
<--------
{noformat}
[1] [https://github.com/apache/ignite-3/tree/main/modules/transactions]
was:
This ticket implies the implementation of tx coordination, as described in [1].
This includes:
* TxManager - top-level manager for tx state and coordination
* pre-writes - each tx write is pre-written to partition store in special
format
* replicated tx state - tx state is stored in the partition's raft group
* integration with lock manager (see *precaution* chapter in [1])
The example of single key tx:
{noformat}
Tx thread TxCoordinator
Partition leaseholder.
tx.start
--------->
assign timestamp (id)
txstate = PENDING
<---------
table.put(k,v)
--------->
enlist(partition(k));
lh = getLeaseholder(partition(k))
------------>
write txstate = PENDING
fut=lockManager.tryAcquire(k,timestamp);
wait for completion async
prewrite(k, v)
<---------
tx.commit
--------->
------------>
write txstate = COMMITTED
lockManager.tryRelease(k, timestamp)
<-----------
lh.txmap.state = COMMITTED
when all leasholders are replied,
reply to initiator
<--------
{noformat}
[1] [https://github.com/apache/ignite-3/tree/main/modules/transactions]
> Implement tx coordination
> -------------------------
>
> Key: IGNITE-15085
> URL: https://issues.apache.org/jira/browse/IGNITE-15085
> Project: Ignite
> Issue Type: Task
> Reporter: Alexey Scherbakov
> Priority: Major
> Labels: iep-61, ignite-3
>
> This ticket implies the implementation of tx coordination, as described in
> [1].
> This includes:
> * TxManager - top-level manager for tx state and coordination
> * pre-writes - each tx write is pre-written to partition store in special
> format
> * replicated tx state - tx state is stored in the partition's raft group
> * integration with lock manager (see *precaution* chapter in [1])
> The example of single key tx:
> {noformat}
> Tx client TxCoordinator
> Partition leaseholder.
> tx.start
> --------->
> assign timestamp (id)
> txstate = PENDING
> <---------
> table.put(k,v)
> --------->
> enlist(partition(k));
> lh = getLeaseholder(partition(k))
>
> ------------>
>
> write txstate = PENDING
>
> fut=lockManager.tryAcquire(k,timestamp);
>
> wait for completion async
>
> prewrite(k, v)
> <---------
> tx.commit
> --------->
>
> ------------>
>
> write txstate = COMMITTED
>
> lockManager.tryRelease(k, timestamp)
>
> <-----------
> lh.txmap.state = COMMITTED
> when all leasholders are replied,
> reply to initiator
> <--------
> {noformat}
> [1] [https://github.com/apache/ignite-3/tree/main/modules/transactions]
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