Artsiom Mishuta

[Raft Topology] 'OperationTimedOut' error in SELECT query during adding new node

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test: test_simple_add_new_node_while_query_info ``` Test bootstrapped node streams all data 1. Create a cluster with a three nodes with rf, insert data 3. Add node, while node is bootstrapping query data...

MgmtRepair nemeses failed with cause: get repair target: get cluster views: gocql: no response received from cassandra within timeout period

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## Issue description - [ ] This issue is a regression. - [x] It is unknown if this issue is a regression. MgmtRepair nemeses failed too fast by error: ```get...

"ccm create command " fail with error: Command '['bash', '-c', '/home/artsiom/.ccm/scylla-repository/unstable/branch-5.0/latest/scylla-core-package/install.sh --prefix /home/artsiom/.ccm/scylla-repository/unstable/branch-5.0/latest --nonroot --supervisor']' returned non-zero exit status 1. full output ``` ccm create --scylla -v unstable/branch-5.0:latest -n 2...

fix test teardown race with ongoing test operation

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This commit brings several new features in scylla_cluster.py to fix runaway asyncio task problems in topology tests - Start-Stop Lock and Stop Event in ScyllaServer - Tasks History, Wait for...

test(latency): enable hinted handoff-during-upgrades

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enable hinted handoff for perf-regression-latency-650gb-upgrade ### Testing - [(https://jenkins.scylladb.com/view/staging/job/scylla-staging/job/artsiom_mishuta/job/hints/job/scylla-master-perf-regression-latency-650gb-roling-upgrade-v2/)](https://jenkins.scylladb.com/view/staging/job/scylla-staging/job/artsiom_mishuta/job/hints/job/scylla-master-perf-regression-latency-650gb-roling-upgrade-v2/) - https://jenkins.scylladb.com/view/staging/job/scylla-staging/job/artsiom_mishuta/job/hints/job/scylla-master-perf-regression-latency-650gb-roling-upgrade-tablest-v2/ ### PR pre-checks (self review) - [ ] I added the relevant `backport` labels - [ ] I didn't...

test(latency): enable hinted handoff(650gb with nemesis)

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enable hinted handoff for perf-regression-latency-650gb-with-nemesis ### Testing - https://jenkins.scylladb.com/job/scylla-staging/job/artsiom_mishuta/job/hints/job/scylla-master-perf-regression-latency-650gb-with-nemesis/ ### PR pre-checks (self review) - [ ] I added the relevant `backport` labels - [ ] I didn't leave commented-out/debugging...

test(latency) enable hinted handoff(grow shrink)

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enable hinted handoff for perf-regression-latency-650gb-grow-shrink ### Testing - https://jenkins.scylladb.com/view/staging/job/scylla-staging/job/artsiom_mishuta/job/hints/job/scylla-master-perf-regression-latency-650gb-grow-shrink-v2/ - https://jenkins.scylladb.com/view/staging/job/scylla-staging/job/artsiom_mishuta/job/hints/job/scylla-master-perf-regression-latency-650gb-grow-shrink-tablets-v2/ ### PR pre-checks (self review) - [x] I added the relevant `backport` labels - [x] I didn't leave commented-out/debugging...

the idea is to test the hardest case - modifying a column that is a regular column in the base table, but in the materialized view is one of the...

ScyllaDB issue - https://github.com/scylladb/scylladb/issues/19421 resolution of the original issue: update the nemesis, ScyllaDB works as expected here. this is still a P3 Scylla issue - so this adjustment would be...

the idea of the test is to measure how hinted handoff applying is affect performance (latency, throughput) ideally 20% resources of the cluster for background work ### Testing - [...