Tim Armstrong has uploaded this change for review. ( http://gerrit.cloudera.org:8080/10314
Change subject: IMPALA-6970: race with decreasing scanner reservation ...................................................................... IMPALA-6970: race with decreasing scanner reservation The usage pattern of DecreaseReservationTo() in ReturnReservationFromScannerThread() can decrease the reservation by more than 'bytes' if there is a concurrent IncreaseReservation() call. The API is changed to fit the requirements of the scanner, which does not want to release more than the memory reserved for that scanner thread. Testing: Added some backend tests (including concurrency) for the new API. Change-Id: I653225c981bf674d2b2b947f3a3cb4d8f382d36b --- M be/src/benchmarks/bloom-filter-benchmark.cc M be/src/exec/exec-node.cc M be/src/exec/exec-node.h M be/src/exec/hdfs-scan-node.cc M be/src/runtime/bufferpool/buffer-pool-internal.h M be/src/runtime/bufferpool/buffer-pool-test.cc M be/src/runtime/bufferpool/buffer-pool.cc M be/src/runtime/bufferpool/buffer-pool.h 8 files changed, 76 insertions(+), 35 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/14/10314/2 -- To view, visit http://gerrit.cloudera.org:8080/10314 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I653225c981bf674d2b2b947f3a3cb4d8f382d36b Gerrit-Change-Number: 10314 Gerrit-PatchSet: 2 Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
