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https://issues.apache.org/jira/browse/ARROW-15938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neal Richardson updated ARROW-15938:
------------------------------------
Fix Version/s: 9.0.0
> [R][C++] Segfault in left join with empty right table when filtered on
> partition
> --------------------------------------------------------------------------------
>
> Key: ARROW-15938
> URL: https://issues.apache.org/jira/browse/ARROW-15938
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 7.0.2
> Environment: ubuntu linux, R4.1.2
> Reporter: Vitalie Spinu
> Priority: Major
> Labels: query-engine
> Fix For: 9.0.0
>
>
> When the right table in a join is empty as a result of a filtering on a
> partition group the join segfaults:
> {code:java}
> library(arrow)
> library(glue)
> df <- mutate(iris, id = runif(n()))
> dir <- "./tmp/iris"
> dir.create(glue("{dir}/group=a/"), recursive = T, showWarnings = F)
> dir.create(glue("{dir}/group=b/"), recursive = T, showWarnings = F)
> write_parquet(df, glue("{dir}/group=a/part1.parquet"))
> write_parquet(df, glue("{dir}/group=b/part2.parquet"))
> db1 <- open_dataset(dir) %>%
> filter(group == "blabla")
> open_dataset(dir) %>%
> filter(group == "b") %>%
> select(id) %>%
> left_join(db1, by = "id") %>%
> collect()
> {code}
> {code:java}
> ==24063== Thread 7:
> ==24063== Invalid read of size 1
> ==24063== at 0x1FFE606D:
> arrow::compute::HashJoinBasicImpl::ProbeBatch_OutputOne(long,
> arrow::compute::ExecBatch*, arrow::compute::ExecBatch*,
> arrow::compute::ExecBatch*, arrow::compute::ExecBatch*) (in
> /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x1FFE68CC:
> arrow::compute::HashJoinBasicImpl::ProbeBatch_OutputOne(unsigned long, long,
> int const*, int const*) (in /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x1FFE84D5:
> arrow::compute::HashJoinBasicImpl::ProbeBatch(unsigned long,
> arrow::compute::ExecBatch const&) (in
> /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x1FFE8CB4:
> arrow::compute::HashJoinBasicImpl::InputReceived(unsigned long, int,
> arrow::compute::ExecBatch) (in /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x200011CF:
> arrow::compute::HashJoinNode::InputReceived(arrow::compute::ExecNode*,
> arrow::compute::ExecBatch) (in /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x1FFB580E:
> arrow::compute::MapNode::SubmitTask(std::function<arrow::Result<arrow::compute::ExecBatch>
> (arrow::compute::ExecBatch)>,
> arrow::compute::ExecBatch)::{lambda()#1}::operator()() const (in
> /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x1FFB6444: arrow::internal::FnOnce<void
> ()>::FnImpl<std::_Bind<arrow::detail::ContinueFuture
> (arrow::Future<arrow::internal::Empty>,
> arrow::compute::MapNode::SubmitTask(std::function<arrow::Result<arrow::compute::ExecBatch>
> (arrow::compute::ExecBatch)>,
> arrow::compute::ExecBatch)::{lambda()#2}::operator()() const::{lambda()#1})>
> >::invoke() (in /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x1FE2B2A0:
> std::thread::_State_impl<std::thread::_Invoker<std::tuple<arrow::internal::ThreadPool::LaunchWorkersUnlocked(int)::{lambda()#1}>
> > >::_M_run() (in /home/vspinu/bin/arrow/lib/libarrow.so.800.0.0)
> ==24063== by 0x92844BF: ??? (in
> /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.29)
> ==24063== by 0x6DD46DA: start_thread (pthread_create.c:463)
> ==24063== by 0x710D71E: clone (clone.S:95)
> ==24063== Address 0x10 is not stack'd, malloc'd or (recently) free'd
> ==24063== *** caught segfault ***
> address 0x10, cause 'memory not mapped'Traceback:
> 1: Table__from_RecordBatchReader(self)
> 2: tab$read_table()
> 3: do_exec_plan(x)
> 4: doTryCatch(return(expr), name, parentenv, handler)
> 5: tryCatchOne(expr, names, parentenv, handlers[[1L]])
> 6: tryCatchList(expr, classes, parentenv, handlers)
> 7: tryCatch(tab <- do_exec_plan(x), error = function(e) {
> handle_csv_read_error(e, x$.data$schema)})
> 8: collect.arrow_dplyr_query(.)
> 9: collect(.)
> 10: open_dataset(dir) %>% filter(group == "b") %>% select(id) %>%
> left_join(db1, by = "id") %>% collect()Possible actions:
> 1: abort (with core dump, if enabled)
> 2: normal R exit
> 3: exit R without saving workspace
> 4: exit R saving workspace {code}
> This is arrow from the current master ece0e23f1.
> It's worth noting that if the right table is filtered on a non-partitioned
> variable the problem does not occur.
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