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From "Maxim Muzafarov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-11074) Implement catch-up temporary WAL
Date Fri, 25 Jan 2019 07:50:00 GMT
Maxim Muzafarov created IGNITE-11074:
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             Summary: Implement catch-up temporary WAL
                 Key: IGNITE-11074
                 URL: https://issues.apache.org/jira/browse/IGNITE-11074
             Project: Ignite
          Issue Type: Sub-task
            Reporter: Maxim Muzafarov
            Assignee: Maxim Muzafarov


While the demander node is in the partition file transmission state it must save all cache
entries corresponding to the moving partition into a new temporary WAL storage. These entries
will be applied later one by one on the received cache partition file. All asynchronous operations
will be enrolled to the end of temporary WAL storage during storage reads until it becomes
fully read. The file-based FIFO approach assumes to be used by this process.

The new write-ahead-log manager for writing temporary records must support to:

Unlimited number of wal-files to store temporary data records;
Iterating over stored data records during an asynchronous writer thread inserts new records;
WAL-per-partiton approach needs to be used;
Write operations to temporary WAL storage must have higher priority over reading operations;



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