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https://issues.apache.org/jira/browse/IGNITE-4887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16069655#comment-16069655
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Alexey Kuznetsov edited comment on IGNITE-4887 at 6/30/17 7:59 AM:
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The following tests added:
||Scenarion||Result||
|Start 10 transactions in one thread, write the only key, suspend them by
order. The next step is resume, commit by order |The last write is persisted
only|
|Pessimistic transaction write in one key before suspension, and resume tx in
another thread | Writing in another thread is not blocked|
|Start tx, write key and suspend. The next is resume in another thread, suspend
before commit. Start new tx in the first thread, make commit. Resume first tx
and commit it. |The first tx result is persisted|
|Pessimistic tx write key , suspend forever. Start new pessimistic tx, try to
write the same key | The second tx hangs waiting for unblock on the key|
|Pessimistic tx write key , suspend forever. Trying to put cache lock on the
key.| Cache lock hangs waiting for unblock on the key|
[~yzhdanov] lets discuss proposed scenarious. Are they sufficient for ticket to
be merged to master?
was (Author: alexey kuznetsov):
The following tests added:
||Scenarion||Result||
|Start 10 transactions in one thread, write the only key, suspend them by
order. The next step is resume, commit by order |The last write is persisted
only|
|Pessimistic transaction write in one key before suspension, and resume tx in
another thread | Writing in another thread is not blocked|
|Start tx, write key and suspend. The next is resume in another thread, suspend
before commit. Start new tx in the first thread, make commit. Resume first tx
and commit it. |The first tx result is persisted|
|Pessimistic tx write key , suspend forever. Start new pessimistic tx, try to
write the same key | The second tx hangs waiting for unblock on the key|
|Pessimistic tx write key , suspend forever. Trying to put cache lock on the
key.| Cache lock hangs waiting for unblock on the key|
> Support for starting transaction in another thread
> --------------------------------------------------
>
> Key: IGNITE-4887
> URL: https://issues.apache.org/jira/browse/IGNITE-4887
> Project: Ignite
> Issue Type: Improvement
> Components: general
> Affects Versions: 1.9
> Reporter: Alexey Kuznetsov
> Assignee: Alexey Kuznetsov
> Attachments: HangTest.txt
>
>
> Consider the following pseudo-code:
> {code:xml}
> IgniteTransactions transactions = ignite1.transactions();
> Transaction tx = startTransaction(transactions);
> cache.put("key1", 1);
> tx.stop();
> {code}
> And in another thread:
> {code:xml}
> transactions.txStart(tx);
> cache.put("key3", 3);
> cache.remove("key2");
> tx.commit();
> {code}
> The Api should be implemented , that let you continue transaction in another
> thread.
> method stop() should mark the transaction as unavailable for further commit.
> method txStart() should resume the transaction.
> reason behind the proposal :
> Consider the next scenario:
> we begin transaction, doing some changes and start async future that will be
> able to introduce futher changes into transaction and commit it in the end.
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