Maria Makedonskaya created IGNITE-13382: -------------------------------------------
Summary: DurableBackgroundTask can abandon incomplete task Key: IGNITE-13382 URL: https://issues.apache.org/jira/browse/IGNITE-13382 Project: Ignite Issue Type: Bug Affects Versions: 2.7 Reporter: Maria Makedonskaya Assignee: Maria Makedonskaya DurableBackgroundTasks are tracked using metastorage, there's a specific marker for every task, and it is removed right after the task is complete. But there's a race between checkpointer and metastorage. End-marker removal is a logical operation, while task itself is mostly physical (at least the existing one). So, following scenario is possible: * Checkpoint occurs in the middle of the task; * Task is completed before the next checkpoint; * Metastorage record is deleted, this fact if written to WAL and synced to the storage; * Node failed; * Recovery process applies deletion from metastorage, this means that DurableBackgroundTasks info is lost; * But part of the index is still present in the storage. I think that we should remove markers from metastorage only after the next checkpoint, this will 100% save us from such situation. -- This message was sent by Atlassian Jira (v8.3.4#803005)