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From d..@eiler.net
Subject Re: Help with tuning for larger clusters
Date Wed, 28 Oct 2015 10:40:33 GMT
Thanks for the info Denis.

Removing the failureDetectionTimeout and using the networkTimeout  
seems to allow the nodes to join the topology in about the same amount  
of time. I'm still only having occasional success running anything  
(even just the pi estimator)

I seem to always see a bunch of warnings...a summary is dumped below  
along with my config at the end, any guidance you can provide is  
appreciated.

Thanks,
Joe

Every node seems to see a bunch of "Retrying preload partition", with  
the lowest locNodeOrder having fewer nodes in the remaining

[14:52:38,979][WARN  
][ignite-#104%sys-null%][GridDhtPartitionsExchangeFuture] Retrying  
preload partition exchange due to timeout [done=false, dummy=false,  
exchId=GridDhtPartitionExchangeId [topVer=AffinityTopologyVersion  
[topVer=62, minorTopVer=0], nodeId=fd9620f5, evt=NODE_JOINED],  
rcvdIds=[], rmtIds=[0ab29a08, 5216f6ba, f882885f, 0d232f1a, b74f5ebb,  
5790761a, 55d2082e, b1bf93b3, 2fd79f9f, a899ccce, 3dd74aba, 320d05fd,  
0d44a4b3, 9a00f235, 4426467e, 7837fdfc, e8778da0, 4a988e3e, f8cabdbb,  
494ad6fd, 7c05abfb, 5902c851, c406028e, a0b57685, e213b903, c85a0b46,  
df981c08, 187cd54f, f0b7b298, 94ec7576, 041975f5, aecba5d0, 5549256d,  
f9b5a77a, 596d0df7, 26266d8c, 0e664e25, 97d112b2, aac08043, 6b81a2b1,  
5a2a1012, 534ac94b, b34cb942, 837785eb, 966d70b2, 3aab732e, 4e34ad89,  
6df0ffff, 4c7c3c47, 85eea5fe, 1c5e2f6b, 3f426f4e, 27a9bef9, cd874e96,  
dc3256a7, 4da50521, 1d370c9e, 19c334eb, 24be15dd, 6c922af3, 01ea2812],  
remaining=[0ab29a08, 5216f6ba, f882885f, 0d232f1a, b74f5ebb, 5790761a,  
55d2082e, b1bf93b3, 2fd79f9f, a899ccce, 3dd74aba, 320d05fd, 0d44a4b3,  
9a00f235, 4426467e, 7837fdfc, e8778da0, 4a988e3e, f8cabdbb, 494ad6fd,  
7c05abfb, 5902c851, c406028e, a0b57685, e213b903, c85a0b46, df981c08,  
187cd54f, f0b7b298, 94ec7576, 041975f5, aecba5d0, 5549256d, f9b5a77a,  
596d0df7, 26266d8c, 0e664e25, 97d112b2, aac08043, 6b81a2b1, 5a2a1012,  
534ac94b, b34cb942, 837785eb, 966d70b2, 3aab732e, 4e34ad89, 6df0ffff,  
4c7c3c47, 85eea5fe, 1c5e2f6b, 3f426f4e, 27a9bef9, cd874e96, dc3256a7,  
4da50521, 1d370c9e, 19c334eb, 24be15dd, 6c922af3, 01ea2812],  
init=true, initFut=true, ready=true, replied=false, added=true,  
oldest=0d44a4b3, oldestOrder=1, evtLatch=0, locNodeOrder=62,  
locNodeId=fd9620f5-3ebb-4a71-a482-73d6a81b1688]


[14:38:41,893][WARN  
][ignite-#95%sys-null%][GridDhtPartitionsExchangeFuture] Retrying  
preload partition exchange due to timeout [done=false, dummy=false,  
exchId=GridDhtPartitionExchangeId [topVer=AffinityTopologyVersion  
[topVer=25, minorTopVer=0], nodeId=df981c08, evt=NODE_JOINED],  
rcvdIds=[7c05abfb, b34cb942, e213b903, 320d05fd, 5902c851, f0b7b298,  
1d370c9e, 0d232f1a, 494ad6fd, 5a2a1012, b1bf93b3, 55d2082e, 7837fdfc,  
85eea5fe, 4e34ad89, 5790761a, 3f426f4e, aac08043, 187cd54f, 01ea2812,  
c406028e, 24be15dd, 966d70b2], rmtIds=[0d232f1a, 5790761a, 55d2082e,  
b1bf93b3, aac08043, 5a2a1012, b34cb942, 320d05fd, 966d70b2, 4e34ad89,  
85eea5fe, 7837fdfc, 3f426f4e, 1d370c9e, 494ad6fd, 7c05abfb, 5902c851,  
c406028e, 24be15dd, e213b903, df981c08, 187cd54f, f0b7b298, 01ea2812],  
remaining=[df981c08], init=true, initFut=true, ready=true,  
replied=false, added=true, oldest=0d44a4b3, oldestOrder=1, evtLatch=0,  
locNodeOrder=1, locNodeId=0d44a4b3-4d10-4f67-b8bd-005be226b1df]


I also see a little over half the nodes getting "Still waiting for  
initial partition map exchange" warnings like this


[14:39:37,848][WARN ][main][GridCachePartitionExchangeManager] Still  
waiting for initial partition map exchange  
[fut=GridDhtPartitionsExchangeFuture [dummy=false, forcePreload=false,  
reassign=false, discoEvt=DiscoveryEvent [evtNode=TcpDiscoveryNode  
[id=27a9bef9-de04-486d-aac0-bfa749e9007d, addrs=[0:0:0:0:0:0:0:1%1,  
10.148.0.87, 10.159.1.182, 127.0.0.1],  
sockAddrs=[r1i4n10.redacted.com/10.148.0.87:47500,  
/0:0:0:0:0:0:0:1%1:47500, /10.159.1.182:47500, /10.148.0.87:47500,  
/10.159.1.182:47500, /127.0.0.1:47500], discPort=47500, order=48,  
intOrder=48, lastExchangeTime=1445974777828, loc=true,  
ver=1.4.0#19691231-sha1:00000000, isClient=false], topVer=48,  
nodeId8=27a9bef9, msg=null, type=NODE_JOINED, tstamp=1445974647187],  
rcvdIds=GridConcurrentHashSet [elements=[]],  
rmtIds=[0ab29a08-9c95-4054-8035-225f5828b3d4,  
0d232f1a-0f46-4798-a39a-63a17dc4dc7f,  
f9b5a77a-a4c1-46aa-872e-aeaca9b76ee3,  
596d0df7-3edf-4078-8f4a-ffa3d96296c6,  
5790761a-aeeb-44d1-9fce-3fee31ef39b7,  
55d2082e-3517-4828-8d47-57b4ed5a41bc,  
26266d8c-cc87-4472-9fa4-c526d6da2233,  
0e664e25-8dde-4df8-966b-53b60f9a1087,  
b1bf93b3-24bb-4520-ade0-31d05a93558d,  
aac08043-875a-485a-ab2c-cd7e66d68f8f,  
2fd79f9f-9590-41d2-962e-004a3d7690b5,  
5a2a1012-0766-448c-9583-25873c305de9,  
534ac94b-8dd1-4fa8-a481-539fa4f4ce55,  
b34cb942-e960-4a00-b4fb-10add6466a93,  
320d05fd-e021-40ac-83bc-62f54756771b,  
0d44a4b3-4d10-4f67-b8bd-005be226b1df,  
837785eb-24e0-496a-a0cc-f795b64b5929,  
9a00f235-3b6a-4be5-b0e3-93cd1beacaf4,  
966d70b2-e1dc-4e20-9876-b63736545abd,  
3aab732e-a075-4b19-9525-e97a1260a4fe,  
4e34ad89-fa46-4503-a599-b8c937ca1f47,  
4c7c3c47-6e5c-4c15-80a9-408192596bc2,  
85eea5fe-9aff-4821-970c-4ce006ee853a,  
7837fdfc-6255-4784-8088-09d4e6e37bb9,  
3f426f4e-2d0c-402a-a4af-9d7656f46484,  
e8778da0-a764-4ad9-afba-8a748564e12a,  
4a988e3e-3434-4271-acd6-af2a1e30524c,  
cd874e96-63cf-41c9-8e8a-75f3223bfe9d,  
f8cabdbb-875a-480b-8b5e-4b5313c5fcbd,  
dc3256a7-ae23-4c2e-b375-55e2884e045d,  
4da50521-aad0-48a4-9f79-858bbc2e6b89,  
1d370c9e-250f-4733-8b8a-7b6f5c6e1b2b,  
494ad6fd-1637-44b8-8d3a-1fa19681ba64,  
7c05abfb-dba1-43c3-a8b1-af504762ec60,  
5902c851-5275-41fd-89c4-cd6390c88670,  
19c334eb-5661-4697-879d-1082571dfef8,  
c406028e-768e-404e-8417-40d2960c4ba3,  
a0b57685-e5dc-498c-99a4-33b1aef32632,  
24be15dd-45f7-4980-b4f8-3176ab67e8f6,  
e213b903-107b-4465-8fe1-78b7b393d631,  
df981c08-148d-4266-9ea7-163168012968,  
187cd54f-396b-4c3c-9bfc-9883ac37f556,  
f0b7b298-6432-477a-85a0-83e29e8c5380,  
94ec7576-7a02-4c08-8739-4e0fc52a3d3a,  
041975f5-990a-4792-b384-eded32966783,  
01ea2812-5005-4152-af2e-2586bf65b4c6,  
aecba5d0-9d9b-4ab6-9018-62f5abb7b809],  
exchId=GridDhtPartitionExchangeId [topVer=AffinityTopologyVersion  
[topVer=48, minorTopVer=0], nodeId=27a9bef9, evt=NODE_JOINED],  
init=true, ready=true, replied=false, added=true,  
initFut=GridFutureAdapter [resFlag=2, res=true,  
startTime=1445974657836, endTime=1445974658400,  
ignoreInterrupts=false, lsnr=null, state=DONE], topSnapshot=null,  
lastVer=null, partReleaseFut=GridCompoundFuture [lsnrCalls=3,  
finished=true, rdc=null, init=true,  
res=java.util.concurrent.atomic.AtomicMarkableReference@6b58be0e,  
err=null, done=true, cancelled=false, err=null, futs=[true, true,  
true]], skipPreload=false, clientOnlyExchange=false,  
oldest=0d44a4b3-4d10-4f67-b8bd-005be226b1df, oldestOrder=1,  
evtLatch=0, remaining=[0ab29a08-9c95-4054-8035-225f5828b3d4,  
0d232f1a-0f46-4798-a39a-63a17dc4dc7f,  
f9b5a77a-a4c1-46aa-872e-aeaca9b76ee3,  
596d0df7-3edf-4078-8f4a-ffa3d96296c6,  
5790761a-aeeb-44d1-9fce-3fee31ef39b7,  
55d2082e-3517-4828-8d47-57b4ed5a41bc,  
26266d8c-cc87-4472-9fa4-c526d6da2233,  
0e664e25-8dde-4df8-966b-53b60f9a1087,  
b1bf93b3-24bb-4520-ade0-31d05a93558d,  
aac08043-875a-485a-ab2c-cd7e66d68f8f,  
2fd79f9f-9590-41d2-962e-004a3d7690b5,  
5a2a1012-0766-448c-9583-25873c305de9,  
534ac94b-8dd1-4fa8-a481-539fa4f4ce55,  
b34cb942-e960-4a00-b4fb-10add6466a93,  
320d05fd-e021-40ac-83bc-62f54756771b,  
0d44a4b3-4d10-4f67-b8bd-005be226b1df,  
837785eb-24e0-496a-a0cc-f795b64b5929,  
9a00f235-3b6a-4be5-b0e3-93cd1beacaf4,  
966d70b2-e1dc-4e20-9876-b63736545abd,  
3aab732e-a075-4b19-9525-e97a1260a4fe,  
4e34ad89-fa46-4503-a599-b8c937ca1f47,  
4c7c3c47-6e5c-4c15-80a9-408192596bc2,  
85eea5fe-9aff-4821-970c-4ce006ee853a,  
7837fdfc-6255-4784-8088-09d4e6e37bb9,  
3f426f4e-2d0c-402a-a4af-9d7656f46484,  
e8778da0-a764-4ad9-afba-8a748564e12a,  
4a988e3e-3434-4271-acd6-af2a1e30524c,  
cd874e96-63cf-41c9-8e8a-75f3223bfe9d,  
f8cabdbb-875a-480b-8b5e-4b5313c5fcbd,  
dc3256a7-ae23-4c2e-b375-55e2884e045d,  
4da50521-aad0-48a4-9f79-858bbc2e6b89,  
1d370c9e-250f-4733-8b8a-7b6f5c6e1b2b,  
494ad6fd-1637-44b8-8d3a-1fa19681ba64,  
7c05abfb-dba1-43c3-a8b1-af504762ec60,  
5902c851-5275-41fd-89c4-cd6390c88670,  
19c334eb-5661-4697-879d-1082571dfef8,  
c406028e-768e-404e-8417-40d2960c4ba3,  
a0b57685-e5dc-498c-99a4-33b1aef32632,  
24be15dd-45f7-4980-b4f8-3176ab67e8f6,  
e213b903-107b-4465-8fe1-78b7b393d631,  
df981c08-148d-4266-9ea7-163168012968,  
187cd54f-396b-4c3c-9bfc-9883ac37f556,  
f0b7b298-6432-477a-85a0-83e29e8c5380,  
94ec7576-7a02-4c08-8739-4e0fc52a3d3a,  
041975f5-990a-4792-b384-eded32966783,  
01ea2812-5005-4152-af2e-2586bf65b4c6,  
aecba5d0-9d9b-4ab6-9018-62f5abb7b809], super=GridFutureAdapter  
[resFlag=0, res=null, startTime=1445974657836, endTime=0,  
ignoreInterrupts=false, lsnr=null, state=INIT]]]



Then on the occasions when mapreduce jobs fail I will see one node  
with (it isn't always the same node)


[14:52:57,080][WARN  
][grid-nio-worker-3-#135%null%][TcpCommunicationSpi] Closing NIO  
session because of unhandled exception [cls=class  
o.a.i.i.util.nio.GridNioException, msg=Connection timed out]
[14:52:59,123][WARN  
][grid-nio-worker-3-#135%null%][TcpCommunicationSpi] Failed to process  
selector key (will close): GridSelectorNioSessionImpl [selectorIdx=3,  
queueSize=0, writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768  
cap=32768], readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768  
cap=32768], recovery=GridNioRecoveryDescriptor [acked=3, resendCnt=0,  
rcvCnt=0, reserved=true, lastAck=0, nodeLeft=false,  
node=TcpDiscoveryNode [id=837785eb-24e0-496a-a0cc-f795b64b5929,  
addrs=[0:0:0:0:0:0:0:1%1, 10.148.0.81, 10.159.1.176, 127.0.0.1],  
sockAddrs=[/10.159.1.176:47500, /0:0:0:0:0:0:0:1%1:47500,  
r1i4n4.redacted.com/10.148.0.81:47500, /10.148.0.81:47500,  
/10.159.1.176:47500, /127.0.0.1:47500], discPort=47500, order=45,  
intOrder=45, lastExchangeTime=1445974625750, loc=false,  
ver=1.4.0#19691231-sha1:00000000, isClient=false], connected=true,  
connectCnt=1, queueLimit=5120], super=GridNioSessionImpl  
[locAddr=/10.159.1.112:46222, rmtAddr=/10.159.1.176:47100,  
createTime=1445974646591, closeTime=0, bytesSent=30217, bytesRcvd=9,  
sndSchedTime=1445975577912, lastSndTime=1445975577912,  
lastRcvTime=1445974655114, readsPaused=false,  
filterChain=FilterChain[filters=[GridNioCodecFilter  
[parser=o.a.i.i.util.nio.GridDirectParser@44de55ba, directMode=true],  
GridConnectionBytesVerifyFilter], accepted=false]]
[14:52:59,124][WARN  
][grid-nio-worker-3-#135%null%][TcpCommunicationSpi] Closing NIO  
session because of unhandled exception [cls=class  
o.a.i.i.util.nio.GridNioException, msg=Connection timed out]
[14:53:00,105][WARN  
][grid-nio-worker-3-#135%null%][TcpCommunicationSpi] Failed to process  
selector key (will close): GridSelectorNioSessionImpl [selectorIdx=3,  
queueSize=0, writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768  
cap=32768], readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768  
cap=32768], recovery=GridNioRecoveryDescriptor [acked=0, resendCnt=0,  
rcvCnt=0, reserved=true, lastAck=0, nodeLeft=false,  
node=TcpDiscoveryNode [id=4426467e-b4b4-4912-baa1-d7cc839d9188,  
addrs=[0:0:0:0:0:0:0:1%1, 10.148.0.106, 10.159.1.201, 127.0.0.1],  
sockAddrs=[/10.159.1.201:47500, /0:0:0:0:0:0:0:1%1:47500,  
r1i5n11.redacted.com/10.148.0.106:47500, /10.148.0.106:47500,  
/10.159.1.201:47500, /127.0.0.1:47500], discPort=47500, order=57,  
intOrder=57, lastExchangeTime=1445974625790, loc=false,  
ver=1.4.0#19691231-sha1:00000000, isClient=false], connected=true,  
connectCnt=1, queueLimit=5120], super=GridNioSessionImpl  
[locAddr=/10.159.1.112:60869, rmtAddr=/10.159.1.201:47100,  
createTime=1445974654478, closeTime=0, bytesSent=22979, bytesRcvd=0,  
sndSchedTime=1445975577912, lastSndTime=1445975577912,  
lastRcvTime=1445974654478, readsPaused=false,  
filterChain=FilterChain[filters=[GridNioCodecFilter  
[parser=o.a.i.i.util.nio.GridDirectParser@44de55ba, directMode=true],  
GridConnectionBytesVerifyFilter], accepted=false]]
[14:53:00,105][WARN  
][grid-nio-worker-3-#135%null%][TcpCommunicationSpi] Closing NIO  
session because of unhandled exception [cls=class  
o.a.i.i.util.nio.GridNioException, msg=Connection timed out]


I've tried adjusting the timeout settings further but haven't had much  
success.

Here is what my config looks like, it is obviously heavily based off  
the hadoop example config.


<?xml version="1.0" encoding="UTF-8"?>
<beans ns1:schemaLocation="http://www.springframework.org/schema/beans  
        http://www.springframework.org/schema/beans/spring-beans.xsd    
      http://www.springframework.org/schema/util         
http://www.springframework.org/schema/util/spring-util.xsd"  
xmlns="http://www.springframework.org/schema/beans"  
xmlns:ns1="http://www.w3.org/2001/XMLSchema-instance">
   <description>
         Spring file for Ignite node configuration with IGFS and  
Apache Hadoop map-reduce support enabled.
         Ignite node will start with this configuration by default.
     </description>
   <bean  
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"  
id="propertyConfigurer">
     <property name="systemPropertiesModeName"  
value="SYSTEM_PROPERTIES_MODE_FALLBACK" />
     <property name="searchSystemEnvironment" value="true" />
   </bean>
   <bean abstract="true"  
class="org.apache.ignite.configuration.FileSystemConfiguration"  
id="igfsCfgBase">
     <property name="blockSize" value="#{128 * 1024}" />
     <property name="perNodeBatchSize" value="512" />
     <property name="perNodeParallelBatchCount" value="16" />
     <property name="prefetchBlocks" value="32" />
   </bean>
   <bean abstract="true"  
class="org.apache.ignite.configuration.CacheConfiguration"  
id="dataCacheCfgBase">
     <property name="cacheMode" value="PARTITIONED" />
     <property name="atomicityMode" value="TRANSACTIONAL" />
     <property name="writeSynchronizationMode" value="FULL_SYNC" />
     <property name="backups" value="0" />
     <property name="affinityMapper">
       <bean class="org.apache.ignite.igfs.IgfsGroupDataBlocksKeyMapper">
         <constructor-arg value="512" />
       </bean>
     </property>
     <property name="startSize" value="#{100*1024*1024}" />
     <property name="offHeapMaxMemory" value="0" />
   </bean>
   <bean abstract="true"  
class="org.apache.ignite.configuration.CacheConfiguration"  
id="metaCacheCfgBase">
     <property name="cacheMode" value="REPLICATED" />
     <property name="atomicityMode" value="TRANSACTIONAL" />
     <property name="writeSynchronizationMode" value="FULL_SYNC" />
   </bean>
   <bean class="org.apache.ignite.configuration.IgniteConfiguration"  
id="grid.cfg">
     <property name="failureDetectionTimeout" value="3000" />
     <property name="hadoopConfiguration">
       <bean class="org.apache.ignite.configuration.HadoopConfiguration">
         <property name="finishedJobInfoTtl" value="30000" />
       </bean>
     </property>
     <property name="connectorConfiguration">
       <bean class="org.apache.ignite.configuration.ConnectorConfiguration">
         <property name="port" value="11211" />
       </bean>
     </property>
     <property name="fileSystemConfiguration">
       <list>
         <bean  
class="org.apache.ignite.configuration.FileSystemConfiguration"  
parent="igfsCfgBase">
           <property name="name" value="igfs" />
           <property name="metaCacheName" value="igfs-meta" />
           <property name="dataCacheName" value="igfs-data" />
           <property name="ipcEndpointConfiguration">
             <bean class="org.apache.ignite.igfs.IgfsIpcEndpointConfiguration">
               <property name="type" value="TCP" />
               <property name="host" value="r1i0n12" />
               <property name="port" value="10500" />
             </bean>
           </property>
         </bean>
       </list>
     </property>
     <property name="cacheConfiguration">
       <list>
         <bean  
class="org.apache.ignite.configuration.CacheConfiguration"  
parent="metaCacheCfgBase">
           <property name="name" value="igfs-meta" />
         </bean>
         <bean  
class="org.apache.ignite.configuration.CacheConfiguration"  
parent="dataCacheCfgBase">
           <property name="name" value="igfs-data" />
         </bean>
       </list>
     </property>
     <property name="includeEventTypes">
       <list>
         <ns2:constant  
static-field="org.apache.ignite.events.EventType.EVT_TASK_FAILED"  
xmlns:ns2="http://www.springframework.org/schema/util" />
         <ns2:constant  
static-field="org.apache.ignite.events.EventType.EVT_TASK_FINISHED"  
xmlns:ns2="http://www.springframework.org/schema/util" />
         <ns2:constant  
static-field="org.apache.ignite.events.EventType.EVT_JOB_MAPPED"  
xmlns:ns2="http://www.springframework.org/schema/util" />
       </list>
     </property>
     <property name="discoverySpi">
       <bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
         <property name="ipFinder">
           <bean  
class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">
             <property name="addresses">
               <list>
                 <value>r1i0n12:47500</value>
               </list>
             </property>
           </bean>
         </property>
       </bean>
     </property>
   </bean>
</beans>



Quoting Denis Magda <dmagda@gridgain.com>:

> Hi Joe,
>
> Great!
>
> Please see below
>
> On 10/27/2015 9:37 AM, dev@eiler.net wrote:
>> Reducing the port range (to a single port) and lowering the  
>> IgniteConfiguration.setFailureDetectionTimeout to 1000 helped speed  
>> up everybody joining the topology and I was able to get a pi  
>> estimator run on 64 nodes.
>>
>
> I suspect that the reason was in the number of ports specified in  
> the range.  By some reason it takes significant time to get a  
> response from TCP/IP stack that a connection can't be established on  
> a particular port number.
> Please try to reduce the port range, lower  
> TcpDiscoverySpi.setNetworkTimeout, keep  
> IgniteConfiguration.setFailureDetectionTimeout's default value and  
> share results with us.
>
>> Thanks again for the help, I'm over the current hurdle.
>> Joe
>>
>>
>> Quoting dev@eiler.net:
>>
>>> Thanks for the quick response Denis.
>>>
>>> I did a port range of 10 ports. I'll take a look at the  
>>> failureDetectionTimeout and networkTimeout.
>>>
>>> Side question: Is there an easy way to map between the  
>>> programmatic API and the spring XML properties? For instance I was  
>>> trying to find the correct xml incantation for  
>>> TcpDiscoverySpi.setMaxMissedHeartbeats(int) and I might have a  
>>> similar issue finding  
>>> IgniteConfiguration.setFailureDetectionTimeout(long). It seems  
>>> like I can usually drop the set and adjust capitalization  
>>> (setFooBar() == <property name="fooBar")
>>>
> Yes, your understanding is correct.
>>> Please pardon my ignorance on terminology:
>>> Are the nodes I run ignite.sh on considered server nodes or  
>>> cluster nodes (I would have thought they are the same)
>>>
> Actually we have a notion of server and client nodes. This page  
> contains extensive information on the type of nodes:
> https://apacheignite.readme.io/docs/clients-vs-servers
>
> A cluster node is just a server or client node.
>
> Regards,
> Denis
>>> Thanks,
>>> Joe
>>>
>>> Quoting Denis Magda <dmagda@gridgain.com>:
>>>
>>>> Hi Joe,
>>>>
>>>> How big is a port range, that you specified in your discovery  
>>>> configuration, for a every single node?
>>>> Please take into account that the discovery may iterate over  
>>>> every port from the range before one node connects to the other  
>>>> and depending on the TCP related settings of your network it may  
>>>> take significant time before the cluster is assembled.
>>>>
>>>> Here I would recommend you to reduce the port range as much as  
>>>> possible and to play with the following network related parameters:
>>>> - Try to use the failure detection timeout instead of setting  
>>>> socket, ack and many other timeouts explicitly  
>>>> (https://apacheignite.readme.io/docs/cluster-config#failure-detection-timeout);
>>>> - Try to play with TcpDiscoverySpi.networkTimeout because this  
>>>> timeout is considered during the time when a cluster node tries  
>>>> to join a cluster.
>>>>
>>>> In order to help you with the hanging compute tasks and to give  
>>>> you more specific recommendations regarding the slow join process  
>>>> please provide us with the following:
>>>> - config files for server and cluster nodes;
>>>> - log files from all the nodes. Please start the nodes with  
>>>> -DIGNITE_QUIET=false virtual machine property. If you start the  
>>>> nodes using ignite.sh/bat then just pass '-v' as an argument to  
>>>> the script.
>>>> - thread dumps for the nodes that are hanging waiting for the  
>>>> compute tasks to be completed.
>>>>
>>>> Regards,
>>>> Denis
>>>>
>>>> On 10/26/2015 6:56 AM, dev@eiler.net wrote:
>>>>> Hi all,
>>>>>
>>>>> I have been experimenting with ignite and have run into a  
>>>>> problem scaling up to larger clusters.
>>>>>
>>>>> I am playing with only two different use cases, 1) a Hadoop  
>>>>> MapReduce accelerator 2) an in memory data grid (no secondary  
>>>>> file system) being accessed by frameworks using the HDFS
>>>>>
>>>>> Everything works fine with a smaller cluster (8 nodes) but with  
>>>>> a larger cluster (64 nodes) it takes a couple of minutes for all  
>>>>> the nodes to register with the cluster(which would be ok) and  
>>>>> mapreduce jobs just hang and never return.
>>>>>
>>>>> I've compiled the latest Ignite 1.4 (with ignite.edition=hadoop)  
>>>>> from source, and am using it with Hadoop 2.7.1 just trying to  
>>>>> run things like the pi estimator and wordcount examples.
>>>>>
>>>>> I started with the config/hadoop/default-config.xml
>>>>>
>>>>> I can't use multicast so I've configured it to use static IP  
>>>>> based discovery with just a single node/port range.
>>>>>
>>>>> I've increased the heartbeat frequency to 10000 and that seemed  
>>>>> to help make things more stable once all the nodes do join the  
>>>>> cluster. I've also played with increasing both the socket  
>>>>> timeout and the ack timeout but that seemed to just make it take  
>>>>> longer for nodes to attempt to join the cluster after a failed  
>>>>> attempt.
>>>>>
>>>>> I have access to a couple of different clusters, we allocate  
>>>>> resources with slurm so I get a piece of a cluster to play with  
>>>>> (hence the no-multicast restriction). The nodes all have fast  
>>>>> networks (FDR InfiniBand) and a decent amount of memory  
>>>>> (64GB-128GB) but no local storage (or swap space).
>>>>>
>>>>> As mentioned earlier, I disable the secondaryFilesystem.
>>>>>
>>>>> Any advice/hints/example xml configs would be extremely welcome.
>>>>>
>>>>>
>>>>> I also haven't been seeing the expected performance using the  
>>>>> hdfs api to access ignite. I've tried both using the hdfs cli to  
>>>>> do some simple timings of put/get and a little java program that  
>>>>> writes then reads a file.  Even with small files (500MB) that  
>>>>> should be kept completely in a single node, I only see about  
>>>>> 250MB/s for writes and reads are much slower than that (4x to  
>>>>> 10x).  The writes are better than hdfs (our hdfs is backed with  
>>>>> pretty poor storage) but reads are much slower. Now I haven't  
>>>>> tried scaling this at all but with an 8 node ignite cluster and  
>>>>> a single "client" access a single file I would hope for  
>>>>> something closer to memory speeds. (if you would like me to  
>>>>> split this into another message to the list just let me know,  
>>>>> I'm assuming the cause it the same---I missed a required config  
>>>>> setting ;-) )
>>>>>
>>>>> Thanks in advance for any help,
>>>>> Joe
>>>>>
>>>>>
>>>>>
>>>>>
>>
>>
>>




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