Merge pull request #294 from JohT/feature/minimize-neo4j-transaction-log-disk-space

Minimize Neo4j transaction log disk space utilization

Author: JohT

graph-visualization/renderVisualizations.js

@@ -136,7 +136,8 @@ let browser;
       "--disable-component-extensions-with-background-pages",
       "--disable-client-side-phishing-detection",
       "--use-gl=disabled",
-      "--disable-features=Vulkan", 
+      "--disable-features=Vulkan",
+      "--no-sandbox" // See https://pptr.dev/troubleshooting#issues-with-apparmor-on-ubuntu
     ],
   }); // { headless: false } for testing
 

scripts/configuration/template-neo4j-v4.conf

@@ -19,4 +19,7 @@ dbms.jvm.additional=-XX:+ExitOnOutOfMemoryError
 dbms.memory.transaction.global_max_size=6g
 
 # Memory: Limit the amount of memory that a single transaction can consume.
-dbms.memory.transaction.max_size=6g
+dbms.memory.transaction.max_size=6g
+
+# Transaction: Retention policy for transaction logs needed to perform recovery and backups.
+dbms.tx_log.rotation.retention_policy=keep_none

scripts/configuration/template-neo4j.conf

@@ -19,4 +19,7 @@ server.jvm.additional=-XX:+ExitOnOutOfMemoryError
 db.memory.transaction.total.max=6g
 
 # Memory: Limit the amount of memory that a single transaction can consume.
-db.memory.transaction.max=6g
+db.memory.transaction.max=6g
+
+# Transaction: Retention policy for transaction logs needed to perform recovery and backups.
+db.tx_log.rotation.retention_policy=keep_none

scripts/setupNeo4j.sh

@@ -98,8 +98,10 @@ if [ ! -d "${NEO4J_INSTALLATION_DIRECTORY}" ] ; then
     echo "setupNeo4j: Commenting out configuration properties that will later be replaced or are not needed"
     if [[ "$NEO4J_MAJOR_VERSION_NUMBER" -ge 5 ]]; then
         sed -i.backup '/^server\.directories\.import=/ s/^/# defined in the directory section further below #/' "${NEO4J_CONFIG}"
+        sed -i.backup '/^db\.tx_log\.rotation\.retention_policy=/ s/^/# defined in the transaction section further below #/' "${NEO4J_CONFIG}"
     else
         sed -i.backup '/^dbms\.directories\.import=/ s/^/# defined in the directory section further below #/' "${NEO4J_CONFIG}"
+        sed -i.backup '/^dbms\.tx_log\.rotation\.retention_policy=/ s/^/# defined in the transaction section further below #/' "${NEO4J_CONFIG}"
     fi
     # Remove the backup file
     rm -f "${NEO4J_CONFIG}.backup"
@@ -161,7 +163,7 @@ if [ ! -d "${NEO4J_INSTALLATION_DIRECTORY}" ] ; then
         } >> "${NEO4J_CONFIG}"
     fi
 
-    echo "setupNeo4j: Configuring static settings (memory, procedure permittions, ...)"
+    echo "setupNeo4j: Configuring static settings (memory, procedure permissions, ...)"
     if [[ "$NEO4J_MAJOR_VERSION_NUMBER" -ge 5 ]]; then
         cat "${SCRIPTS_DIR}/configuration/template-neo4j.conf" >> "${NEO4J_CONFIG}"
     else