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Posted to notifications@accumulo.apache.org by GitBox <gi...@apache.org> on 2021/11/02 18:26:35 UTC
[GitHub] [accumulo] keith-ratcliffe opened a new issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
keith-ratcliffe opened a new issue #2341:
URL: https://github.com/apache/accumulo/issues/2341
Discovered this while testing DataWave on 2.1.0-SNAPSHOT (5f20e386)....
Minor compactions are failing as a result of `ClassCastException`, as shown below, which arises from a `deepCopy` call in this [DataWave iterator](https://github.com/NationalSecurityAgency/datawave/blob/feature/accumulo-2.0/warehouse/ingest-core/src/main/java/datawave/iterators/PropogatingIterator.java#L285), which is configured for all scopes on the given table
I note that [org.apache.accumulo.core.iterators.SortedMapIterator](https://github.com/apache/accumulo/blob/main/core/src/main/java/org/apache/accumulo/core/iterators/SortedMapIterator.java) no longer implements `InterruptibleIterator` as in previous versions. That appears to explain the issue, but perhaps there's a workaround or something we're doing in DW that no longer makes sense for 2.1.x(?)
```
[compaction.FileCompactor] ERROR: class org.apache.accumulo.core.iterators.SortedMapIterator cannot be cast to class org.apache.accumulo.core.iteratorsImpl.system.InterruptibleIterator (org.apache.accumulo.core.iterators.SortedMapIterator and org.apache.accumulo.core.iteratorsImpl.system.InterruptibleIterator are in unnamed module of loader 'app')
java.lang.ClassCastException: class org.apache.accumulo.core.iterators.SortedMapIterator cannot be cast to class org.apache.accumulo.core.iteratorsImpl.system.InterruptibleIterator (org.apache.accumulo.core.iterators.SortedMapIterator and org.apache.accumulo.core.iteratorsImpl.system.InterruptibleIterator are in unnamed module of loader 'app')
at org.apache.accumulo.core.iteratorsImpl.system.LocalityGroupIterator$LocalityGroup.<init>(LocalityGroupIterator.java:48) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.LocalityGroupIterator.deepCopy(LocalityGroupIterator.java:307) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.MultiIterator.<init>(MultiIterator.java:54) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.MultiIterator.deepCopy(MultiIterator.java:46) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.MultiIterator.deepCopy(MultiIterator.java:38) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.server.compaction.CountingIterator.<init>(CountingIterator.java:44) ~[accumulo-server-base-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.server.compaction.CountingIterator.deepCopy(CountingIterator.java:40) ~[accumulo-server-base-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.server.compaction.CountingIterator.deepCopy(CountingIterator.java:32) ~[accumulo-server-base-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.DeletingIterator.<init>(DeletingIterator.java:51) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.DeletingIterator.deepCopy(DeletingIterator.java:47) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.DeletingIterator.deepCopy(DeletingIterator.java:37) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.iteratorsImpl.system.ColumnFamilySkippingIterator.deepCopy(ColumnFamilySkippingIterator.java:107) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at datawave.iterators.PropogatingIterator.init(PropogatingIterator.java:285) ~[?:?]
at org.apache.accumulo.core.conf.IterConfigUtil.loadIterators(IterConfigUtil.java:221) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.core.conf.IterConfigUtil.convertItersAndLoad(IterConfigUtil.java:188) ~[accumulo-core-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.server.compaction.FileCompactor.compactLocalityGroup(FileCompactor.java:359) ~[accumulo-server-base-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.server.compaction.FileCompactor.call(FileCompactor.java:222) ~[accumulo-server-base-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.tserver.tablet.MinorCompactor.call(MinorCompactor.java:97) ~[accumulo-tserver-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.tserver.tablet.Tablet.minorCompact(Tablet.java:800) ~[accumulo-tserver-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.tserver.tablet.MinorCompactionTask.run(MinorCompactionTask.java:99) ~[accumulo-tserver-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.tserver.tablet.Tablet.minorCompactNow(Tablet.java:933) ~[accumulo-tserver-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.tserver.AssignmentHandler.run(AssignmentHandler.java:174) ~[accumulo-tserver-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.accumulo.tserver.ActiveAssignmentRunnable.run(ActiveAssignmentRunnable.java:63) ~[accumulo-tserver-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57) ~[htrace-core-3.2.0-incubating.jar:3.2.0-incubating]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[?:?]
at java.lang.Thread.run(Thread.java:829) [?:?]
2021-10-28T18:29:47,925 [tablet.MinorCompactor] WARN : MinC failed ....
```
**And here's the table config...**
```
config -t datawave.shard -np
-----------+---------------------------------------------+----------------------------------------------------------------
SCOPE | NAME | VALUE
-----------+---------------------------------------------+----------------------------------------------------------------
default | table.balancer ............................ | org.apache.accumulo.core.spi.balancer.SimpleLoadBalancer
table | @override .............................. | datawave.ingest.table.balancer.ShardedTableTabletBalancer
default | table.bloom.enabled ....................... | false
default | table.bloom.error.rate .................... | 0.5%
default | table.bloom.hash.type ..................... | murmur
default | table.bloom.key.functor ................... | org.apache.accumulo.core.file.keyfunctor.RowFunctor
default | table.bloom.load.threshold ................ | 1
default | table.bloom.size .......................... | 1048576
default | table.bulk.max.tablets .................... | 0
default | table.cache.block.enable .................. | false
default | table.cache.index.enable .................. | true
default | table.class.loader.context ................ | ## From my accumulo.properties:
system | @override .............................. | extlib ## general.vfs.context.classpath.extlib=file://${ACCUMULO_HOME}/lib/ext/.*.jar"
default | table.classpath.context ................... |
default | table.compaction.configurer ............... |
default | table.compaction.dispatcher ............... | org.apache.accumulo.core.spi.compaction.SimpleCompactionDispatcher
default | table.compaction.major.everything.idle .... | 1h
default | table.compaction.major.ratio .............. | 3
default | table.compaction.minor.idle ............... | 5m
default | table.compaction.minor.logs.threshold ..... | 3
default | table.compaction.selection.expiration.ms .. | 2m
default | table.compaction.selector ................. |
table | table.constraint.1 ........................ | org.apache.accumulo.core.constraints.DefaultKeySizeConstraint
default | table.durability .......................... | sync
default | table.failures.ignore ..................... | false
default | table.file.blocksize ...................... | 0B
default | table.file.compress.blocksize ............. | 100k
default | table.file.compress.blocksize.index ....... | 128k
default | table.file.compress.type .................. | gz
default | table.file.max ............................ | 15
default | table.file.replication .................... | 0
default | table.file.summary.maxSize ................ | 256k
default | table.file.type ........................... | rf
default | table.formatter ........................... | org.apache.accumulo.core.util.format.DefaultFormatter
table | table.group.fullcontent ................... | d
table | table.group.termfrequency ................. | tf
default | table.groups.enabled ...................... |
table | @override .............................. | termfrequency,fullcontent
default | table.interepreter ........................ | org.apache.accumulo.core.util.interpret.DefaultScanInterpreter
table | table.iterator.majc.agg ................... | 10,datawave.iterators.PropogatingIterator
table | table.iterator.majc.agg.opt.tf ............ | datawave.ingest.table.aggregator.TextIndexAggregator
table | table.iterator.majc.vers .................. | 20,org.apache.accumulo.core.iterators.user.VersioningIterator
table | table.iterator.majc.vers.opt.maxVersions .. | 1
table | table.iterator.minc.agg ................... | 10,datawave.iterators.PropogatingIterator
table | table.iterator.minc.agg.opt.tf ............ | datawave.ingest.table.aggregator.TextIndexAggregator
table | table.iterator.minc.vers .................. | 20,org.apache.accumulo.core.iterators.user.VersioningIterator
table | table.iterator.minc.vers.opt.maxVersions .. | 1
table | table.iterator.scan.agg ................... | 10,datawave.iterators.PropogatingIterator
table | table.iterator.scan.agg.opt.tf ............ | datawave.ingest.table.aggregator.TextIndexAggregator
table | table.iterator.scan.vers .................. | 20,org.apache.accumulo.core.iterators.user.VersioningIterator
table | table.iterator.scan.vers.opt.maxVersions .. | 1
default | table.majc.compaction.strategy ............ | org.apache.accumulo.tserver.compaction.DefaultCompactionStrategy
default | table.replication ......................... | false
default | table.sampler ............................. |
default | table.scan.dispatcher ..................... | org.apache.accumulo.core.spi.scan.SimpleScanDispatcher
default | table.scan.max.memory ..................... | 512k
default | table.security.scan.visibility.default .... |
default | table.split.endrow.size.max ............... | 10k
default | table.split.threshold ..................... | 1G
default | table.suspend.duration .................... | 0s
default | table.walog.enabled ....................... | true
```
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[GitHub] [accumulo] keith-ratcliffe commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
keith-ratcliffe commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-960105994
> @keith-ratcliffe do you know if you may have different version of iterators on your classpath? ...
As far as Accumulo iterators, I only have the 2.1.0-SNAPSHOT versions on the classpath. In the deepCopy example you ran, did the code path include `LocalityGroupIterator`? Seems like that's one of the few, if not only, ways to trigger that explicit cast on deepCopy
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-961067347
OK I finally was able to reproduce it locally using Uno and ChunkCombiner from examples. It is a bit of a pain to reproduce since it is a very specific situation but a good find either way. To add another layer to this bug, I also noticed testing that it depends on whether native map is used or not.
Natvie map iterator has no problem loading:
<pre>
2021-11-04T10:04:53,287 [system.LocalityGroupIterator] INFO : DUDE about to cast for lg org.apache.accumulo.core.iteratorsImpl.system.LocalityGroupIterator$LocalityGroup@9abcd34 lg.iter = class org.apache.accumulo.tserver.NativeMap$NMSKVIter
</pre>
But when not using them, you get the cast exception.
<pre>
2021-11-04T09:00:59,228 [system.LocalityGroupIterator] INFO : DUDE about to cast for lg org.apache.accumulo.core.iteratorsImpl.system.LocalityGroupIterator$LocalityGroup@75d0c58f lg.iter = class org.apache.accumulo.core.iteratorsImpl.system.InterruptibleMapIterator
2021-11-04T09:00:59,228 [compaction.FileCompactor] ERROR: class org.apache.accumulo.core.iterators.SortedMapIterator cannot be cast to class org.apache.accumulo.core.iteratorsImpl.system.InterruptibleIterator (org.apache.accumulo.core.iterators.SortedMapIterator and org.apache.accumulo.core.iteratorsImpl.system.InterruptibleIterator are in unnamed module of loader 'app')
</pre>
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-958035466
I started looking into this issue but got sidetracked by another nasty bug in #2342. It seems like the issue here is due to the moving of system iterator classes done for #1411 and when a runtime iterator stack gets created with iterators for locality groups, the class hierarchy is broken.
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-959990728
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-960280862
> > @keith-ratcliffe do you know if you may have different version of iterators on your classpath? ...
>
> As far as Accumulo iterators, I only have the 2.1.0-SNAPSHOT versions on the classpath. In the deepCopy example you ran, did the code path include `LocalityGroupIterator`? Seems like that's one of the few, if not only, ways to trigger that explicit cast on deepCopy
Actually, I am not sure that matters. The `FileCompactor` will call the method even without any locality groups setup. Here is the part of the code in `compactLocalityGroup()` that creates the `ColumnFamilySkippingIterator` and then loads the configured iterators:
https://github.com/apache/accumulo/blob/146b1d3d0dc2ade6f1888c9905d83e37d98aedbe/server/base/src/main/java/org/apache/accumulo/server/compaction/FileCompactor.java#L351-L359
And here is the only place that method gets called. It will get called at least once (or once for each LG + 1):
https://github.com/apache/accumulo/blob/146b1d3d0dc2ade6f1888c9905d83e37d98aedbe/server/base/src/main/java/org/apache/accumulo/server/compaction/FileCompactor.java#L219-L228
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-960289597
Disregard my last comment. I see what you are talking about now. The problem could be with the cast in LocalityGroupIterator here:
https://github.com/apache/accumulo/blob/6a74b4667e3bd33e34b5262c5dd8ea64167fb657/core/src/main/java/org/apache/accumulo/core/iteratorsImpl/system/LocalityGroupIterator.java#L48
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[GitHub] [accumulo] keith-ratcliffe commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
keith-ratcliffe commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-958214391
FWIW....I temporarily modified my snapshot deployment to have `SortedMapIterator` re-implement `InterruptibleIterator` so that I could proceed with integration testing. That does seem to have resolved the issue for me, but I'm assuming that's not the desired fix, since it ostensibly violates the spirit of #1411
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[GitHub] [accumulo] milleruntime closed issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime closed issue #2341:
URL: https://github.com/apache/accumulo/issues/2341
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-959990728
@keith-ratcliffe do you know if you may have different version of iterators on your classpath? Maybe try -verbose:class to see what jar the iterators are being loaded from. I can't seem to reproduce this using an example jar from 2.0 and Uno running 2.1. I found a similar class in the examples repo, `ChunkCombiner` that extends SKVI and does a deepCopy on its source. This class gets loaded from a separate examples jar but its parent class gets loaded from a 2.1 jar:
<pre>
tserver_ip-10-113-12-25.out:[1287.552s][info][class,load ] org.apache.accumulo.examples.filedata.ChunkCombiner source: file:/home/mike/workspace/uno/install/accumulo-2.1.0-SNAPSHOT/lib/accumulo-examples.jar
tserver_ip-10-113-12-25.out:[28.990s][info][class,load] org.apache.accumulo.core.iterators.SortedMapIterator source: file:/home/mike/workspace/uno/install/accumulo-2.1.0-SNAPSHOT/lib/accumulo-core-2.1.0-SNAPSHOT.jar
</pre>
I even added some debugging to see that the iterator was initialized and did the deepCopy on the same source iterator:
<pre>
2021-11-03T16:28:11,379 [conf.IterConfigUtil] INFO : DUDE convertIters source: class org.apache.accumulo.core.iteratorsImpl.system.ColumnFamilySkippingIterator settings: []
2021-11-03T16:28:11,379 [filedata.ChunkCombiner] INFO : DUDE call init. deepCopy on class org.apache.accumulo.core.iteratorsImpl.system.ColumnFamilySkippingIterator
</pre>
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[GitHub] [accumulo] keith-ratcliffe commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
keith-ratcliffe commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-960105994
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-958035466
I started looking into this issue but got sidetracked by another nasty bug in #2342. It seems like the issue here is due to the moving of system iterator classes done for #1411 and when a runtime iterator stack gets created with iterators for locality groups, the class hierarchy is broken.
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[GitHub] [accumulo] keith-ratcliffe commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
keith-ratcliffe commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-960105994
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-959990728
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[GitHub] [accumulo] milleruntime commented on issue #2341: Minor compactions failing on 2.1.0-SNAPSHOT
Posted by GitBox <gi...@apache.org>.
milleruntime commented on issue #2341:
URL: https://github.com/apache/accumulo/issues/2341#issuecomment-960121473
> > @keith-ratcliffe do you know if you may have different version of iterators on your classpath? ...
>
> As far as Accumulo iterators, I only have the 2.1.0-SNAPSHOT versions on the classpath. In the deepCopy example you ran, did the code path include `LocalityGroupIterator`? Seems like that's one of the few, if not only, ways to trigger that explicit cast on deepCopy
I don't think so. I will try again with locality groups and see if I can print the whole iterator runtime stack as well.
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