Backport HBASE-28804 to branch-2 by jhungund · Pull Request #6219 · apache/hbase

jhungund · 2024-09-09T05:44:01Z

[HBASE-28804: Implement asynchronous retrieval of bucket-cache data from persistence

During the retrieval of data from bucket cache persistence file, a transient structure that stores the blocks ordered by filename is constructed from the backing map entries. The population of this transient structure is done during the server start-up. This process increases the region-server startup time, if the bucketcache has large number of blocks.

This population happens inline with the server restart and blocks the server for several minutes. This makes the server restart inconvenient for the external users. Restarts during upgrade can run into timeout issues due to this delay in the server startup.

Hence, the recommendation in this Jira is to make the cache-retrieval asynchronous to the server startup. During a server startup, a new thread is spawn that reads the persistence file and creates the required structures from persistence file. The server continues with the restart and does not wait for the bucket-cache initialisation to complete.

Note that the bucket cache is not available immediately for usage and will only be ready to use after the data is repopulated from persistence into memory.

The prefetch thread that may start before the bucket-cache is initialized is modified to wait until the bucket cache is initialized.

Change-Id: I2c136d7b1d884f74642d29923172a1ad4ada36e4

HBASE-28804: Apply splotless and spotbugs changes.

Change-Id: I239c357a135a058650a20c5707c7c7303a248c85

HBASE-28804: Addressing first round of review comments.

Change-Id: Ie160b249f6a2bff18fd8a577ae32a263b7de25ea

HBASE-28804: Added unit tests for validation of cache in initialization state.

Change-Id: Ib54f565152c391da727be7413dd775fb507daea7

HBASE-28804: Address further review comments.

Change-Id: I446475dc84d52403f67762b878af874b9cbe1937

HBASE-28804: Fix unit test.

Change-Id: I391e5e453e077b7e5733cd997130467b356a3e66

HBASE-28804: Fixed check-style warnings

Change-Id: Ieb6b5841cb7b23d919fbebbe420c0083167d6d0b

Change-Id: I690e840b866795484d2a1463ff47d885d43fc7dc

Apache-HBase · 2024-09-09T06:41:59Z

💔 -1 overall

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			_ Other Tests _
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		51m 20s

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Apache-HBase · 2024-09-09T10:06:30Z

🎊 +1 overall

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Apache-HBase · 2024-09-09T10:18:17Z

💔 -1 overall

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Apache-HBase · 2024-09-09T10:42:12Z

🎊 +1 overall

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…om persistence (apache#6182) Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org> Change-Id: I515d81fdc484cd49308d3164067a2287b8901520

Apache-HBase · 2024-09-09T14:40:02Z

🎊 +1 overall

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		49m 18s

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Apache-HBase · 2024-09-09T17:56:17Z

💔 -1 overall

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Apache-HBase · 2024-09-09T18:11:26Z

🎊 +1 overall

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Apache-HBase · 2024-09-09T18:50:25Z

🎊 +1 overall

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jhungund · 2024-09-10T09:06:55Z

Hi @wchevreuil,
The test failure seen for "org.apache.hadoop.hbase.replication.TestReplicationKillMasterRS" seems to be random and not related to this change. The same test is also listed in the "Existing Failures".

The local execution of the test on my local branch, succeeded.

git Branch:
commit 34450be695ffb4dd63556fc8a376326b6bce4ce4 (HEAD -> branch-2-for-HBASE-28804)
Author: jhungund 106576553+jhungund@users.noreply.github.com
Date: Mon Sep 9 18:44:15 2024 +0530

HBASE-28804: Implement asynchronous retrieval of bucket-cache data from persistence (#6182)
Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>
Change-Id: I515d81fdc484cd49308d3164067a2287b8901520

Test Execution:
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.hadoop.hbase.replication.TestReplicationKillMasterRS
WARNING: A terminally deprecated method in java.lang.System has been called
WARNING: System::setSecurityManager has been called by org.apache.hadoop.hbase.SystemExitRule (file:/Users/janardhan.hungund/hbase-down/hbase/hbase-common/target/hbase-common-2.7.0-SNAPSHOT-tests.jar)
WARNING: Please consider reporting this to the maintainers of org.apache.hadoop.hbase.SystemExitRule
WARNING: System::setSecurityManager will be removed in a future release
WARNING: A terminally deprecated method in java.lang.System has been called
WARNING: System::setSecurityManager has been called by org.apache.hadoop.hbase.SystemExitRule$1 (file:/Users/janardhan.hungund/hbase-down/hbase/hbase-common/target/hbase-common-2.7.0-SNAPSHOT-tests.jar)
WARNING: Please consider reporting this to the maintainers of org.apache.hadoop.hbase.SystemExitRule$1
WARNING: System::setSecurityManager will be removed in a future release
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 37.52 s - in org.apache.hadoop.hbase.replication.TestReplicationKillMasterRS
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

Hence, this seems unrelated to the change.
Thanks,
Janardhan

… bucket-cache data from persistence (apache#6182) (apache#6219) Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>

…om persistence (apache#6182) (apache#6219) The cherry-pick of HBASE-29727 into branch-2.6 accidently brought most of HBASE-28804 into branch-2, this is to backport the remaining original change in HBASE-28804. Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org> Change-Id: I816141ccebf91191aaa4cb6afa04343b64663eb0

jhungund force-pushed the branch-2-for-HBASE-28804 branch from 3acb488 to e1e0c67Compare September 9, 2024 06:51

HBASE-28804: Implement asynchronous retrieval of bucket-cache data fr…
430c9ee
…om persistence (apache#6182) Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org> Change-Id: I515d81fdc484cd49308d3164067a2287b8901520

jhungund force-pushed the branch-2-for-HBASE-28804 branch from e1e0c67 to 430c9eeCompare September 9, 2024 13:38

wchevreuil merged commit d4cffea into apache:branch-2Sep 11, 2024

stoty pushed a commit to stoty/hbase that referenced this pull request Nov 22, 2025
CDPD-72949: Backport HBASE-28804: Implement asynchronous retrieval of…
0bf6d65
… bucket-cache data from persistence (apache#6182) (apache#6219) Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>

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Backport HBASE-28804 to branch-2 - #6219

Backport HBASE-28804 to branch-2#6219
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