Database node soft restart

A non-transitory computer readable medium having program instructions stored thereon that are executable by a computer system to cause the computer system to perform operations comprising:

• allocating a plurality of memory segments in a local memory of the computer system, wherein the plurality of memory segments includes a restart segment that can be used to store data records;
• spawning a set of processes to read a database log and replay log records of the database log to insert a set of data records of a database into the restart segment;
• determining to perform a restart operation to transition from a read mode to a write mode in which the computer system is permitted to process write database transactions, wherein the restart operation includes:
• causing the set of processes to stop reading the database log at a stop position in the database log;
• storing, based on the stop position, database state information in the restart segment, wherein the database state information enables the set of processes to resume reading the database log from the stop position;
• deallocating at least one of the plurality of memory segments other than the restart segment;
• and
• terminating the set of processes;
• and
• after performing the restart operation, spawning the set of processes, wherein the set of processes is operable to resume reading of the database log based on the database state information.

A system, comprising:

• at least one processor;
• and
• memory having program instructions stored thereon that are executable by the at least one processor to cause the system to perform operations comprising:
• allocating a plurality of memory segments in the memory of the system, wherein the plurality of memory segments includes a restart segment that can be used to store data records;
• spawning a set of processes to read a database log and replay log records of the database log to insert a set of data records of a database into the restart segment;
• determining to perform a restart operation to transition from a read mode to a write mode in which the system is permitted to process write database transactions, wherein the restart operation includes:
• causing the set of processes to stop reading the database log at a stop position in the database log;
• storing, based on the stop position, database state information in the restart segment, wherein the database state information the set of processes to resume reading the database log from the stop position;
• deallocating at least one of the plurality of memory segments other than the restart segment;
• and
• terminating the set of processes;
• and
• after performing the restart operation, spawning the set of processes, wherein the set of processes is operable to resume reading of the database log based on the database state information.