Maybe I am looking in the wrong place but Hstore::close() has the evictOnClose parameter hard coded to true:
// close each store file in parallel CompletionService<Void> completionService = new ExecutorCompletionService<Void>(storeFileCloserThreadPool); for (final StoreFile f : result) { completionService.submit(new Callable<Void>() { @Override public Void call() throws IOException { f.closeReader(true); return null; } }); } Where does that setting come into play? -r On 10/21/15, 8:14 AM, "Vladimir Rodionov" <vladrodio...@gmail.com> wrote: >I wonder why disabling cache eviction on close does not work in a case of a >bucket cache? I checked the code and did not find >anything suspicious. It has to work. > >On Wed, Oct 21, 2015 at 3:52 AM, ramkrishna vasudevan < >ramkrishna.s.vasude...@gmail.com> wrote: > >> Seems that the BucketAllocator#freeBlock() is synchronized and hence all >> the bulk close that it tries to do will be blocked in the synchronized >> block. May be something like the IdLock has to be tried here? >> >> Regards >> Ram >> >> On Wed, Oct 21, 2015 at 4:20 PM, ramkrishna vasudevan < >> ramkrishna.s.vasude...@gmail.com> wrote: >> >> > I think the forceful clearing of the blocks from the bucket cache is >> > hurting in this case. I think it is worth opening a JIRA for this and >> work >> > on a fix. >> > >> > Regards >> > Ram >> > >> > On Wed, Oct 21, 2015 at 12:00 AM, Randy Fox <r...@connexity.com> wrote: >> > >> >> Hi Vlad, >> >> >> >> I tried it on a table and on a RegionServer basis and it appears to have >> >> no affect. >> >> Are we sure it is supported for bucket cache? From my charts the bucket >> >> cache is getting cleared at the same time as the region moves occurred. >> >> The regions slow to move are the ones with bucket cache. >> >> >> >> I took a table with 102 regions and blockcache true and turned off block >> >> cache via alter while the table is enabled - it took 19 minutes. To >> turn >> >> block cache back on took 4.3 seconds. >> >> >> >> Let me know if there is anything else to try. This issue is really >> >> hurting our day to day ops. >> >> >> >> Thanks, >> >> >> >> Randy >> >> >> >> >> >> >> >> On 10/15/15, 3:55 PM, "Vladimir Rodionov" <vladrodio...@gmail.com> >> wrote: >> >> >> >> >Hey, Randy >> >> > >> >> >You can verify your hypothesis by setting hbase.rs.evictblocksonclose >> to >> >> >false for your tables. >> >> > >> >> >-Vlad >> >> > >> >> >On Thu, Oct 15, 2015 at 1:06 PM, Randy Fox <r...@connexity.com> wrote: >> >> > >> >> >> Caveat - we are trying to tune the BucketCache (probably a new thread >> >> - as >> >> >> we are not sure we are getting the most out of it) >> >> >> 72G off heap >> >> >> >> >> >> <property> >> >> >> <name>hfile.block.cache.size</name> >> >> >> <value>0.58</value> >> >> >> </property> >> >> >> >> >> >> <property> >> >> >> <name>hbase.bucketcache.ioengine</name> >> >> >> <value>offheap</value> >> >> >> </property> >> >> >> >> >> >> <property> >> >> >> <name>hbase.bucketcache.size</name> >> >> >> <value>72800</value> >> >> >> </property> >> >> >> >> >> >> <property> >> >> >> <name>hbase.bucketcache.bucket.sizes</name> >> >> >> <value>9216,17408,33792,66560</value> >> >> >> </property> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> On 10/15/15, 12:00 PM, "Ted Yu" <yuzhih...@gmail.com> wrote: >> >> >> >> >> >> >I am a bit curious. >> >> >> >0.94 doesn't have BucketCache. >> >> >> > >> >> >> >Can you share BucketCache related config parameters in your cluster >> ? >> >> >> > >> >> >> >Cheers >> >> >> > >> >> >> >On Thu, Oct 15, 2015 at 11:11 AM, Randy Fox <r...@connexity.com> >> >> wrote: >> >> >> > >> >> >> >> >> >> >> >> "StoreFileCloserThread-L-1" prio=10 tid=0x00000000027ec800 >> >> nid=0xad84 >> >> >> >> runnable [0x00007fbcc0c65000] >> >> >> >> java.lang.Thread.State: RUNNABLE >> >> >> >> at java.util.LinkedList.indexOf(LinkedList.java:602) >> >> >> >> at java.util.LinkedList.contains(LinkedList.java:315) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.io.hfile.bucket.BucketAllocator$BucketSizeInfo.freeBlock(BucketAllocator.java:247) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.io.hfile.bucket.BucketAllocator.freeBlock(BucketAllocator.java:449) >> >> >> >> - locked <0x000000041b0887a8> (a >> >> >> >> org.apache.hadoop.hbase.io.hfile.bucket.BucketAllocator) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.evictBlock(BucketCache.java:459) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.evictBlocksByHfileName(BucketCache.java:1036) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.io.hfile.CombinedBlockCache.evictBlocksByHfileName(CombinedBlockCache.java:90) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.io.hfile.HFileReaderV2.close(HFileReaderV2.java:516) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.regionserver.StoreFile$Reader.close(StoreFile.java:1143) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.regionserver.StoreFile.closeReader(StoreFile.java:503) >> >> >> >> - locked <0x00000004944ff2d8> (a >> >> >> >> org.apache.hadoop.hbase.regionserver.StoreFile) >> >> >> >> at >> >> >> >> >> org.apache.hadoop.hbase.regionserver.HStore$2.call(HStore.java:873) >> >> >> >> at >> >> >> >> >> org.apache.hadoop.hbase.regionserver.HStore$2.call(HStore.java:870) >> >> >> >> at >> java.util.concurrent.FutureTask.run(FutureTask.java:262) >> >> >> >> at >> >> >> >> >> >> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) >> >> >> >> at >> java.util.concurrent.FutureTask.run(FutureTask.java:262) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> >> >> >> at java.lang.Thread.run(Thread.java:745) >> >> >> >> >> >> >> >> >> >> >> >> >> >> "StoreCloserThread-Wildfire_graph3,\x00\x04lK\x1B\xFC\x10\xD2,1402949830657.afb6a1720d936a83d73022aeb9ddbb6c.-1" >> >> >> >> prio=10 tid=0x0000000003508800 nid=0xad83 waiting on condition >> >> >> >> [0x00007fbcc5dcc000] >> >> >> >> java.lang.Thread.State: WAITING (parking) >> >> >> >> at sun.misc.Unsafe.park(Native Method) >> >> >> >> - parking to wait for <0x0000000534e90a80> (a >> >> >> >> >> >> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) >> >> >> >> at >> >> >> >> java.util.concurrent.locks.LockSupport.park(LockSupport.java:186) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ExecutorCompletionService.take(ExecutorCompletionService.java:193) >> >> >> >> at >> >> >> >> org.apache.hadoop.hbase.regionserver.HStore.close(HStore.java:883) >> >> >> >> at >> >> >> >> org.apache.hadoop.hbase.regionserver.HStore.close(HStore.java:126) >> >> >> >> at >> >> >> >> >> >> org.apache.hadoop.hbase.regionserver.HRegion$2.call(HRegion.java:1378) >> >> >> >> at >> >> >> >> >> >> org.apache.hadoop.hbase.regionserver.HRegion$2.call(HRegion.java:1375) >> >> >> >> at >> java.util.concurrent.FutureTask.run(FutureTask.java:262) >> >> >> >> at >> >> >> >> >> >> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) >> >> >> >> at >> java.util.concurrent.FutureTask.run(FutureTask.java:262) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> >> >> >> at java.lang.Thread.run(Thread.java:745) >> >> >> >> >> >> >> >> >> >> >> >> "RS_CLOSE_REGION-hb20:60020-0" prio=10 tid=0x00007fcec0142000 >> >> nid=0x3056 >> >> >> >> waiting on condition [0x00007fbcc2d87000] >> >> >> >> java.lang.Thread.State: WAITING (parking) >> >> >> >> at sun.misc.Unsafe.park(Native Method) >> >> >> >> - parking to wait for <0x0000000534e61360> (a >> >> >> >> >> >> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) >> >> >> >> at >> >> >> >> java.util.concurrent.locks.LockSupport.park(LockSupport.java:186) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ExecutorCompletionService.take(ExecutorCompletionService.java:193) >> >> >> >> at >> >> >> >> >> >> org.apache.hadoop.hbase.regionserver.HRegion.doClose(HRegion.java:1385) >> >> >> >> at >> >> >> >> >> >> org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:1280) >> >> >> >> - locked <0x000000042230fa68> (a java.lang.Object) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler.process(CloseRegionHandler.java:138) >> >> >> >> at >> >> >> >> >> >> org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:128) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> >> >> >> at >> >> >> >> >> >> >> >> >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> >> >> >> at java.lang.Thread.run(Thread.java:745) >> >> >> >> >> >> >> >> >> >> >> >> I attached the whole thing as well. >> >> >> >> >> >> >> >> -r >> >> >> >> >> >> >> >> >> >> >> >> On 10/15/15, 10:39 AM, "Ted Yu" <yuzhih...@gmail.com> wrote: >> >> >> >> >> >> >> >> >Can you give a bit more detail on why block eviction was cause >> for >> >> the >> >> >> >> slow region movement? >> >> >> >> > >> >> >> >> >Did you happen to take stack traces ? >> >> >> >> > >> >> >> >> >Thanks >> >> >> >> > >> >> >> >> >> On Oct 15, 2015, at 10:32 AM, Randy Fox <r...@connexity.com> >> >> wrote: >> >> >> >> >> >> >> >> >> >> Hi, >> >> >> >> >> >> >> >> >> >> We just upgraded from 0.94 to 1.0.0 and have noticed that >> region >> >> >> moves >> >> >> >> are super slow (order of minutes) whereas previously they where in >> >> the >> >> >> >> seconds range. After looking at the code, I think the time is >> spent >> >> >> >> waiting for the blocks to be evicted from block cache. >> >> >> >> >> >> >> >> >> >> I wanted to verify that this theory is correct and see if there >> >> is >> >> >> >> anything that can be done to speed up the moves. >> >> >> >> >> >> >> >> >> >> This is particular painful as we are trying to get our configs >> >> tuned >> >> >> to >> >> >> >> the new SW and need to do rolling restarts which is taking almost >> 24 >> >> >> hours >> >> >> >> on our cluster. We also do our own manual rebalancing of regions >> >> across >> >> >> >> RS’s and that task is also now painful. >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> Thanks, >> >> >> >> >> >> >> >> >> >> Randy >> >> >> >> >> >> >> >> >> >> > >> > >>