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YARN-11743. Cgroup v2 support should fall back to v1 when there are no v2 controllers #7222

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Merged
merged 2 commits into from
Jan 9, 2025
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YARN-11743. Cgroup v2 support should fall back to v1 when there are no v2 controllers #7222

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YARN-11743. Cgroup v2 support should fall back to v1 when there are n…
p-szucs Dec 10, 2024
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YARN-11743. Empty commit
p-szucs Jan 9, 2025
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22 changes: 13 additions & 9 deletions ...adoop/yarn/server/nodemanager/containermanager/linux/resources/ResourceHandlerModule.java
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Original file line number Diff line number Diff line change
Expand Up @@ -76,10 +76,10 @@ public class ResourceHandlerModule {
private static volatile CpuResourceHandler
cGroupsCpuResourceHandler;

private static void initializeCGroupHandlers(Configuration conf)
throws ResourceHandlerException {
private static void initializeCGroupHandlers(Configuration conf,
CGroupsHandler.CGroupController controller) throws ResourceHandlerException {
initializeCGroupV1Handler(conf);
if (cgroupsV2Enabled) {
if (cgroupsV2Enabled && !isMountedInCGroupsV1(controller)) {
initializeCGroupV2Handler(conf);
}
}
Expand Down Expand Up @@ -110,6 +110,10 @@ private static void initializeCGroupV2Handler(Configuration conf)
}
}

private static boolean isMountedInCGroupsV1(CGroupsHandler.CGroupController controller) {
return (cGroupV1Handler != null && cGroupV1Handler.getControllerPath(controller) != null);
}

private static boolean isMountedInCGroupsV2(CGroupsHandler.CGroupController controller) {
return (cGroupV2Handler != null && cGroupV2Handler.getControllerPath(controller) != null);
}
Expand Down Expand Up @@ -174,7 +178,7 @@ private static CpuResourceHandler initCGroupsCpuResourceHandler(
if (cGroupsCpuResourceHandler == null) {
LOG.debug("Creating new cgroups cpu handler");

initializeCGroupHandlers(conf);
initializeCGroupHandlers(conf, CGroupsHandler.CGroupController.CPU);
if (isMountedInCGroupsV2(CGroupsHandler.CGroupController.CPU)) {
cGroupsCpuResourceHandler = new CGroupsV2CpuResourceHandlerImpl(cGroupV2Handler);
} else {
Expand All @@ -198,7 +202,7 @@ private static CpuResourceHandler initCGroupsCpuResourceHandler(
if (trafficControlBandwidthHandler == null) {
LOG.info("Creating new traffic control bandwidth handler.");

initializeCGroupHandlers(conf);
initializeCGroupHandlers(conf, CGroupsHandler.CGroupController.NET_CLS);
trafficControlBandwidthHandler = new
TrafficControlBandwidthHandlerImpl(PrivilegedOperationExecutor
.getInstance(conf), cGroupV1Handler,
Expand Down Expand Up @@ -235,7 +239,7 @@ public static ResourceHandler getNetworkTaggingHandler(Configuration conf)
if (networkPacketTaggingHandlerImpl == null) {
LOG.info("Creating new network-tagging-handler.");

initializeCGroupHandlers(conf);
initializeCGroupHandlers(conf, CGroupsHandler.CGroupController.NET_CLS);
networkPacketTaggingHandlerImpl =
new NetworkPacketTaggingHandlerImpl(
PrivilegedOperationExecutor.getInstance(conf), cGroupV1Handler);
Expand Down Expand Up @@ -267,7 +271,7 @@ private static CGroupsBlkioResourceHandlerImpl getCgroupsBlkioResourceHandler(
if (cGroupsBlkioResourceHandler == null) {
LOG.debug("Creating new cgroups blkio handler");

initializeCGroupHandlers(conf);
initializeCGroupHandlers(conf, CGroupsHandler.CGroupController.BLKIO);
cGroupsBlkioResourceHandler =
new CGroupsBlkioResourceHandlerImpl(cGroupV1Handler);
}
Expand All @@ -292,7 +296,7 @@ public static MemoryResourceHandler initMemoryResourceHandler(
synchronized (MemoryResourceHandler.class) {
if (cGroupsMemoryResourceHandler == null) {

initializeCGroupHandlers(conf);
initializeCGroupHandlers(conf, CGroupsHandler.CGroupController.MEMORY);
if (isMountedInCGroupsV2(CGroupsHandler.CGroupController.MEMORY)) {
cGroupsMemoryResourceHandler = new CGroupsV2MemoryResourceHandlerImpl(cGroupV2Handler);
} else {
Expand Down Expand Up @@ -359,7 +363,7 @@ private static void addHandlersFromConfiguredResourcePlugins(
}

for (ResourcePlugin plugin : pluginMap.values()) {
initializeCGroupHandlers(conf);
initializeCGroupV1Handler(conf);
addHandlerIfNotNull(handlerList,
plugin.createResourceHandler(nmContext,
cGroupV1Handler,
Expand Down
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