fix(spark): replace shared spark-events PVC with emptyDir to fix Multi-Attach error
local-path provisioner is RWO-only; attaching a single PVC to master, two workers, history-server, and streaming pod on separate nodes causes Multi-Attach errors. Each pod now gets its own ephemeral emptyDir for /spark-events. Event logging confs removed from CronJobs and streaming Deployment (logs are pod-local and do not persist across restarts). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Janis Eccarius
@@ -34,10 +34,6 @@ spec:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.OpeningBookJob
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- local:///app/analytics.jar
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@@ -69,15 +65,10 @@ spec:
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volumeMounts:
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- name: spark-output
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mountPath: /spark-output
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- name: spark-events
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mountPath: /spark-events
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volumes:
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- name: spark-output
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persistentVolumeClaim:
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claimName: spark-analytics-output
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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---
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apiVersion: batch/v1
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kind: CronJob
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@@ -115,10 +106,6 @@ spec:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.PlayerStatsJob
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- local:///app/analytics.jar
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@@ -149,15 +136,10 @@ spec:
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volumeMounts:
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- name: spark-output
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mountPath: /spark-output
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- name: spark-events
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mountPath: /spark-events
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volumes:
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- name: spark-output
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persistentVolumeClaim:
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claimName: spark-analytics-output
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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---
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apiVersion: batch/v1
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kind: CronJob
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@@ -195,10 +177,6 @@ spec:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.PlayerClusteringJob
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- local:///app/analytics.jar
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@@ -230,15 +208,10 @@ spec:
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volumeMounts:
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- name: spark-output
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mountPath: /spark-output
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- name: spark-events
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mountPath: /spark-events
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volumes:
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- name: spark-output
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persistentVolumeClaim:
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claimName: spark-analytics-output
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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---
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apiVersion: batch/v1
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kind: CronJob
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@@ -276,10 +249,6 @@ spec:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.PlayerGraphJob
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- local:///app/analytics.jar
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@@ -310,12 +279,7 @@ spec:
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volumeMounts:
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- name: spark-output
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mountPath: /spark-output
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- name: spark-events
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mountPath: /spark-events
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volumes:
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- name: spark-output
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persistentVolumeClaim:
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claimName: spark-analytics-output
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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@@ -33,10 +33,6 @@ spec:
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- spark.executor.memory=512m
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.LiveDashboardJob
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- local:///app/analytics.jar
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@@ -67,12 +63,7 @@ spec:
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volumeMounts:
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- name: spark-checkpoint
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mountPath: /spark-checkpoint
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- name: spark-events
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mountPath: /spark-events
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volumes:
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- name: spark-checkpoint
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persistentVolumeClaim:
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claimName: spark-streaming-checkpoint
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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@@ -31,10 +31,6 @@ patches:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.OpeningBookJob
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- local:///app/analytics.jar
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@@ -65,10 +61,6 @@ patches:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.PlayerStatsJob
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- local:///app/analytics.jar
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@@ -98,10 +90,6 @@ patches:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.PlayerClusteringJob
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- local:///app/analytics.jar
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@@ -132,10 +120,6 @@ patches:
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- spark.executor.memory=1g
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.PlayerGraphJob
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- local:///app/analytics.jar
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@@ -163,10 +147,6 @@ patches:
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- spark.executor.memory=512m
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- --conf
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- spark.driver.memory=512m
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- --conf
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- spark.eventLog.enabled=true
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- --conf
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- spark.eventLog.dir=/spark-events
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- --class
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- de.nowchess.analytics.LiveDashboardJob
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- local:///app/analytics.jar
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@@ -40,8 +40,7 @@ spec:
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mountPath: /spark-events
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volumes:
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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emptyDir: {}
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---
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apiVersion: v1
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kind: Service
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@@ -42,8 +42,7 @@ spec:
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mountPath: /spark-events
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volumes:
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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emptyDir: {}
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---
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apiVersion: v1
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kind: Service
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@@ -1,18 +1,5 @@
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apiVersion: v1
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kind: PersistentVolumeClaim
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metadata:
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name: spark-events
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labels:
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app.kubernetes.io/name: spark-cluster
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app.kubernetes.io/part-of: nowchess
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spec:
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# ReadWriteOnce for k3d/local-path compatibility.
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# NOTE: k3d uses the local-path provisioner which only supports RWO.
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# For production with multiple concurrent writers (workers + history server),
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# replace with a RWX-capable storage class such as NFS or Longhorn and
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# change accessModes to [ReadWriteMany].
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accessModes:
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- ReadWriteOnce
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resources:
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requests:
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storage: 5Gi
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# No cluster-level PVCs needed.
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# Analytics output and streaming checkpoint PVCs live in spark-analytics/base/pvc.yaml.
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# spark-events PVC removed: local-path provisioner is RWO-only; sharing a single PVC
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# across master, workers, and history-server on different nodes causes Multi-Attach errors.
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# Event logs now use emptyDir (pod-local, ephemeral) on each pod.
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@@ -43,5 +43,4 @@ spec:
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mountPath: /spark-events
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volumes:
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- name: spark-events
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persistentVolumeClaim:
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claimName: spark-events
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emptyDir: {}
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