[jira] [Commented] (HDFS-16791) New API for enclosing root path for a file
[
https://issues.apache.org/jira/browse/HDFS-16791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776494#comment-17776494
]
ASF GitHub Bot commented on HDFS-16791:
---
hadoop-yetus commented on PR #6198:
URL: https://github.com/apache/hadoop/pull/6198#issuecomment-1767687124
:confetti_ball: **+1 overall**
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[/results-checkstyle-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6198/1/artifact/out/results-checkstyle-root.txt)
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[jira] [Resolved] (HDFS-17220) fix same available space policy in AvailableSpaceVolumeChoosingPolicy
[
https://issues.apache.org/jira/browse/HDFS-17220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tao Li resolved HDFS-17220.
---
Fix Version/s: 3.4.0
Resolution: Fixed
> fix same available space policy in AvailableSpaceVolumeChoosingPolicy
> -
>
> Key: HDFS-17220
> URL: https://issues.apache.org/jira/browse/HDFS-17220
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.3.6
>Reporter: Fei Guo
>Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> if all the volumes have the same available space. for example {{1 MB}} and
> {{dfs.datanode.available-space-volume-choosing-policy.balanced-space-threshold}}
> is set 0, which means we should treat all the volumes equally when we choose
> available volumes.but currently not, we can fix it in
> {{{}AvailableSpaceVolumeChoosingPolicy{}}}.
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[jira] [Commented] (HDFS-17220) fix same available space policy in AvailableSpaceVolumeChoosingPolicy
[
https://issues.apache.org/jira/browse/HDFS-17220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776485#comment-17776485
]
ASF GitHub Bot commented on HDFS-17220:
---
tomscut merged PR #6174:
URL: https://github.com/apache/hadoop/pull/6174
> fix same available space policy in AvailableSpaceVolumeChoosingPolicy
> -
>
> Key: HDFS-17220
> URL: https://issues.apache.org/jira/browse/HDFS-17220
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.3.6
>Reporter: Fei Guo
>Priority: Major
> Labels: pull-request-available
>
> if all the volumes have the same available space. for example {{1 MB}} and
> {{dfs.datanode.available-space-volume-choosing-policy.balanced-space-threshold}}
> is set 0, which means we should treat all the volumes equally when we choose
> available volumes.but currently not, we can fix it in
> {{{}AvailableSpaceVolumeChoosingPolicy{}}}.
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[jira] [Commented] (HDFS-17220) fix same available space policy in AvailableSpaceVolumeChoosingPolicy
[
https://issues.apache.org/jira/browse/HDFS-17220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776486#comment-17776486
]
ASF GitHub Bot commented on HDFS-17220:
---
tomscut commented on PR #6174:
URL: https://github.com/apache/hadoop/pull/6174#issuecomment-1767646253
Thanks @GuoPhilipse for your contribution! Thanks @Hexiaoqiao and
@zhangshuyan0 for your review!
> fix same available space policy in AvailableSpaceVolumeChoosingPolicy
> -
>
> Key: HDFS-17220
> URL: https://issues.apache.org/jira/browse/HDFS-17220
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.3.6
>Reporter: Fei Guo
>Priority: Major
> Labels: pull-request-available
>
> if all the volumes have the same available space. for example {{1 MB}} and
> {{dfs.datanode.available-space-volume-choosing-policy.balanced-space-threshold}}
> is set 0, which means we should treat all the volumes equally when we choose
> available volumes.but currently not, we can fix it in
> {{{}AvailableSpaceVolumeChoosingPolicy{}}}.
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[jira] [Resolved] (HDFS-17228) Improve documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ayush Saxena resolved HDFS-17228. - Fix Version/s: 3.4.0 Hadoop Flags: Reviewed Resolution: Fixed > Improve documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement, documentation >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Labels: pull-request-available > Fix For: 3.4.0 > > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-17228) Improve documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776430#comment-17776430 ] Ayush Saxena commented on HDFS-17228: - Committed to trunk. Thanx [~jianghuazhu] for the contribution & [~elgoiri] for the review!!! > Improve documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement, documentation >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Labels: pull-request-available > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-17228) Improve documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ayush Saxena updated HDFS-17228: Summary: Improve documentation related to BlockManager (was: Add documentation related to BlockManager) > Improve documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement, documentation >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Labels: pull-request-available > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-17228) Add documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776429#comment-17776429 ] ASF GitHub Bot commented on HDFS-17228: --- ayushtkn merged PR #6195: URL: https://github.com/apache/hadoop/pull/6195 > Add documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement, documentation >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Labels: pull-request-available > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-16791) New API for enclosing root path for a file
[ https://issues.apache.org/jira/browse/HDFS-16791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776424#comment-17776424 ] ASF GitHub Bot commented on HDFS-16791: --- mccormickt12 opened a new pull request, #6198: URL: https://github.com/apache/hadoop/pull/6198 …mplementations ### Description of PR Add getEnclosingRoot API to filesystem interface. This API is needed in ViewFileSystem and RBF setups to get around the rename constraint. Renames (like custom trash and staging directories) should be done using this directory to ensure that each mount point is a self contained entity ### How was this patch tested? unit tests ### For code changes: - [ ] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')? - [ ] Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation? - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)? - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, `NOTICE-binary` files? > New API for enclosing root path for a file > -- > > Key: HDFS-16791 > URL: https://issues.apache.org/jira/browse/HDFS-16791 > Project: Hadoop HDFS > Issue Type: Improvement >Reporter: Tom McCormick >Assignee: Tom McCormick >Priority: Major > Labels: pull-request-available > > At LinkedIn we run many HDFS volumes that are federated by either > ViewFilesystem or Router Based Federation. As our number of hdfs volumes > grows, we have a growing need to migrate data seemlessly across volumes. > Many frameworks have a notion of staging or temp directories, but those > directories often live in random locations. We want an API getEnclosingRoot, > which provides the root path a file or dataset. > In ViewFilesystem / Router Based Federation, the enclosingRoot will be the > mount point. > We will also take into account other restrictions for renames like > encryptions zones. > If there are several paths (a mount point and an encryption zone), we will > return the longer path -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-17225) Fix TestNameNodeMXBean#testDecommissioningNodes
[
https://issues.apache.org/jira/browse/HDFS-17225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776332#comment-17776332
]
Steve Loughran commented on HDFS-17225:
---
dont forget to add some error text to the assertion, I do like them -and
modifying an assert is the time to do this
> Fix TestNameNodeMXBean#testDecommissioningNodes
> ---
>
> Key: HDFS-17225
> URL: https://issues.apache.org/jira/browse/HDFS-17225
> Project: Hadoop HDFS
> Issue Type: Improvement
>Reporter: Ayush Saxena
>Priority: Major
>
> Fails in assertion
> {noformat}
> org.junit.ComparisonFailure: expected:<...commissionDuration":[2]}}> but
> was:<...commissionDuration":[1]}}>
> at org.junit.Assert.assertEquals(Assert.java:117)
> at org.junit.Assert.assertEquals(Assert.java:146)
> at
> org.apache.hadoop.hdfs.server.namenode.TestNameNodeMXBean.testDecommissioningNodes(TestNameNodeMXBean.java:432){noformat}
> [https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6185/1/testReport/org.apache.hadoop.hdfs.server.namenode/TestNameNodeMXBean/testDecommissioningNodes/]
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[jira] [Commented] (HDFS-17228) Add documentation related to BlockManager
[
https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776325#comment-17776325
]
ASF GitHub Bot commented on HDFS-17228:
---
hadoop-yetus commented on PR #6195:
URL: https://github.com/apache/hadoop/pull/6195#issuecomment-1766944233
:broken_heart: **-1 overall**
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|
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| modules |
[jira] [Commented] (HDFS-17227) EC: Fix bug in choosing targets when racks is not enough.
[
https://issues.apache.org/jira/browse/HDFS-17227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776289#comment-17776289
]
ASF GitHub Bot commented on HDFS-17227:
---
hadoop-yetus commented on PR #6192:
URL: https://github.com/apache/hadoop/pull/6192#issuecomment-1766828501
:broken_heart: **-1 overall**
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|
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[jira] [Commented] (HDFS-17228) Add documentation related to BlockManager
[
https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776275#comment-17776275
]
ASF GitHub Bot commented on HDFS-17228:
---
hadoop-yetus commented on PR #6195:
URL: https://github.com/apache/hadoop/pull/6195#issuecomment-1766784532
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[jira] [Created] (HDFS-17229) Zookeeper SSL/TLS support in HDFS DelegationTokenAuthenticationFilter
Zita Dombi created HDFS-17229: - Summary: Zookeeper SSL/TLS support in HDFS DelegationTokenAuthenticationFilter Key: HDFS-17229 URL: https://issues.apache.org/jira/browse/HDFS-17229 Project: Hadoop HDFS Issue Type: Improvement Reporter: Zita Dombi Assignee: Zita Dombi HADOOP-18709 added support for Zookeeper to communicate with SSL/TLS enabled in hadoop-common. With those changes we have the necessary parameters, that we need to set to enable SSL/TLS in a ZK Client. That change also did changes in ZKCuratorManager, so with that it is easy to set the SSL/TLS, for Yarn it was done in YARN-11468. In DelegationTokenAuthenticationFilter currently we are using CuratorFrameworkFactory, it'd be good to change it to use ZKCuratorManager and with that we should support SSL/TLS enablement. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-17218) NameNode should remove its excess blocks from the ExcessRedundancyMap When a DN registers
[
https://issues.apache.org/jira/browse/HDFS-17218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776184#comment-17776184
]
ASF GitHub Bot commented on HDFS-17218:
---
zhangshuyan0 commented on code in PR #6176:
URL: https://github.com/apache/hadoop/pull/6176#discussion_r1362023878
##
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java:
##
@@ -1007,6 +1013,7 @@ public void updateRegInfo(DatanodeID nodeReg) {
for(DatanodeStorageInfo storage : getStorageInfos()) {
if (storage.getStorageType() != StorageType.PROVIDED) {
storage.setBlockReportCount(0);
+storage.setBlockContentsStale(true);
Review Comment:
> StaleStorage is used to prevent the namenode from deleting replicas of
blocks whose replicas are indeterminate.
About StaleStorage we can say comments in code:
https://github.com/apache/hadoop/blob/42e695d510befabf3b7cfc52349b0d78faadb249/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeStorageInfo.java#L142-L149
> At startup or at failover, the storages in the cluster may have pending
block deletions from a previous incarnation of the NameNode.
From this, it can be seen that, the design of the "stale content" is to
address the "indeterminate" caused by pending deletions. By the way, if the
information provided by ExcessRedundancyMap is accurate, there will be no
"indeterminate" caused by pending deletions.
See also: https://issues.apache.org/jira/browse/HDFS-1972
> NameNode should remove its excess blocks from the ExcessRedundancyMap When a
> DN registers
> -
>
> Key: HDFS-17218
> URL: https://issues.apache.org/jira/browse/HDFS-17218
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namanode
>Reporter: Haiyang Hu
>Assignee: Haiyang Hu
>Priority: Major
> Labels: pull-request-available
> Attachments: image-2023-10-12-15-52-52-336.png
>
>
> Currently found that DN will lose all pending DNA_INVALIDATE blocks if it
> restarts.
> *Root case*
> Current DN enables asynchronously deletion, it have many pending deletion
> blocks in memory.
> when DN restarts, these cached blocks may be lost. it causes some blocks in
> the excess map in the namenode to be leaked and this will result in many
> blocks having more replicas then expected.
> *solution*
> Consider NameNode should remove its excess blocks from the
> ExcessRedundancyMap When a DN registers,
> this approach will ensure that when processing the DN's full block report,
> the 'processExtraRedundancy' can be performed according to the actual of the
> blocks.
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[jira] [Commented] (HDFS-17227) EC: Fix bug in choosing targets when racks is not enough.
[
https://issues.apache.org/jira/browse/HDFS-17227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776180#comment-17776180
]
ASF GitHub Bot commented on HDFS-17227:
---
hadoop-yetus commented on PR #6192:
URL: https://github.com/apache/hadoop/pull/6192#issuecomment-1766291730
:broken_heart: **-1 overall**
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|
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[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6192/2/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
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|
HDFS loses directories with production data
Hello, We've been using Hadoop (+Spark) for 3 years on production w/o major issues. Lately we observe that whole non-empty directories (table partitions) are disappearing in random ways. We see in application logs (and in hdfs-audit) logs creation of the directory + data files. Then later we see NO this directory in HDFS. hdfs-audit.log shows no traces of deletes or renames for the disappeared directories. We can trust these logs, as we see our manual operations are present in the logs. Time between creation and disappearing is 1-2 days. Maybe we are losing individual files as well, we just cannot find this out reliably. This is a blocker issue for us, we have to stop production data processing until we find out and fix data loss root cause. Please help to identify the root cause or find the right direction for search/further questions. -- Hadoop version: -- Hadoop 3.2.1 Source code repository https://gitbox.apache.org/repos/asf/hadoop.git -r b3cbbb467e22ea829b3808f4b7b01d07e0bf3842 Compiled by rohithsharmaks on 2019-09-10T15:56Z Compiled with protoc 2.5.0 >From source with checksum 776eaf9eee9c0ffc370bcbc1888737 Thank you! Sergey Onuchin
[jira] [Commented] (HDFS-17218) NameNode should remove its excess blocks from the ExcessRedundancyMap When a DN registers
[
https://issues.apache.org/jira/browse/HDFS-17218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776173#comment-17776173
]
ASF GitHub Bot commented on HDFS-17218:
---
zhangshuyan0 commented on code in PR #6176:
URL: https://github.com/apache/hadoop/pull/6176#discussion_r1361994647
##
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java:
##
@@ -1007,6 +1013,7 @@ public void updateRegInfo(DatanodeID nodeReg) {
for(DatanodeStorageInfo storage : getStorageInfos()) {
if (storage.getStorageType() != StorageType.PROVIDED) {
storage.setBlockReportCount(0);
+storage.setBlockContentsStale(true);
Review Comment:
@ZanderXu I think there is a misunderstanding between us. I totally agree
with this change. The difference between us may be that I think it is more
appropriate to merge this change with this PR instead of opening a new issue.
> NameNode should remove its excess blocks from the ExcessRedundancyMap When a
> DN registers
> -
>
> Key: HDFS-17218
> URL: https://issues.apache.org/jira/browse/HDFS-17218
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namanode
>Reporter: Haiyang Hu
>Assignee: Haiyang Hu
>Priority: Major
> Labels: pull-request-available
> Attachments: image-2023-10-12-15-52-52-336.png
>
>
> Currently found that DN will lose all pending DNA_INVALIDATE blocks if it
> restarts.
> *Root case*
> Current DN enables asynchronously deletion, it have many pending deletion
> blocks in memory.
> when DN restarts, these cached blocks may be lost. it causes some blocks in
> the excess map in the namenode to be leaked and this will result in many
> blocks having more replicas then expected.
> *solution*
> Consider NameNode should remove its excess blocks from the
> ExcessRedundancyMap When a DN registers,
> this approach will ensure that when processing the DN's full block report,
> the 'processExtraRedundancy' can be performed according to the actual of the
> blocks.
--
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[jira] [Commented] (HDFS-17218) NameNode should remove its excess blocks from the ExcessRedundancyMap When a DN registers
[
https://issues.apache.org/jira/browse/HDFS-17218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776172#comment-17776172
]
ASF GitHub Bot commented on HDFS-17218:
---
ZanderXu commented on code in PR #6176:
URL: https://github.com/apache/hadoop/pull/6176#discussion_r1361993679
##
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java:
##
@@ -1007,6 +1013,7 @@ public void updateRegInfo(DatanodeID nodeReg) {
for(DatanodeStorageInfo storage : getStorageInfos()) {
if (storage.getStorageType() != StorageType.PROVIDED) {
storage.setBlockReportCount(0);
+storage.setBlockContentsStale(true);
Review Comment:
About the relationship between stale storage and ExcessRedundancyMap.
- StaleStorage is used to prevent the namenode from deleting replicas of
blocks whose replicas are indeterminate.
- ExcessRedundancyMap is used to mark the replicas of blocks that namenode
is deleting
> NameNode should remove its excess blocks from the ExcessRedundancyMap When a
> DN registers
> -
>
> Key: HDFS-17218
> URL: https://issues.apache.org/jira/browse/HDFS-17218
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namanode
>Reporter: Haiyang Hu
>Assignee: Haiyang Hu
>Priority: Major
> Labels: pull-request-available
> Attachments: image-2023-10-12-15-52-52-336.png
>
>
> Currently found that DN will lose all pending DNA_INVALIDATE blocks if it
> restarts.
> *Root case*
> Current DN enables asynchronously deletion, it have many pending deletion
> blocks in memory.
> when DN restarts, these cached blocks may be lost. it causes some blocks in
> the excess map in the namenode to be leaked and this will result in many
> blocks having more replicas then expected.
> *solution*
> Consider NameNode should remove its excess blocks from the
> ExcessRedundancyMap When a DN registers,
> this approach will ensure that when processing the DN's full block report,
> the 'processExtraRedundancy' can be performed according to the actual of the
> blocks.
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[jira] [Commented] (HDFS-17218) NameNode should remove its excess blocks from the ExcessRedundancyMap When a DN registers
[
https://issues.apache.org/jira/browse/HDFS-17218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776157#comment-17776157
]
ASF GitHub Bot commented on HDFS-17218:
---
ZanderXu commented on code in PR #6176:
URL: https://github.com/apache/hadoop/pull/6176#discussion_r1361950390
##
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java:
##
@@ -1007,6 +1013,7 @@ public void updateRegInfo(DatanodeID nodeReg) {
for(DatanodeStorageInfo storage : getStorageInfos()) {
if (storage.getStorageType() != StorageType.PROVIDED) {
storage.setBlockReportCount(0);
+storage.setBlockContentsStale(true);
Review Comment:
> Actually, this situation can happen at any time, not just between
"registerDataNode" and "blockReport". Why do you think that after the DN is
re-registered, the probability of the above situation happening will increase,
and it needs to be dealt with specifically?
Yes, there are some other situations can cause this case. And I don't think
the probability of the above situation happening will increase.
I just think we have a chance to reduce this case. So I think we need to do
it.
> NameNode should remove its excess blocks from the ExcessRedundancyMap When a
> DN registers
> -
>
> Key: HDFS-17218
> URL: https://issues.apache.org/jira/browse/HDFS-17218
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namanode
>Reporter: Haiyang Hu
>Assignee: Haiyang Hu
>Priority: Major
> Labels: pull-request-available
> Attachments: image-2023-10-12-15-52-52-336.png
>
>
> Currently found that DN will lose all pending DNA_INVALIDATE blocks if it
> restarts.
> *Root case*
> Current DN enables asynchronously deletion, it have many pending deletion
> blocks in memory.
> when DN restarts, these cached blocks may be lost. it causes some blocks in
> the excess map in the namenode to be leaked and this will result in many
> blocks having more replicas then expected.
> *solution*
> Consider NameNode should remove its excess blocks from the
> ExcessRedundancyMap When a DN registers,
> this approach will ensure that when processing the DN's full block report,
> the 'processExtraRedundancy' can be performed according to the actual of the
> blocks.
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[jira] [Updated] (HDFS-17228) Add documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] ASF GitHub Bot updated HDFS-17228: -- Labels: pull-request-available (was: ) > Add documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement, documentation >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Labels: pull-request-available > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-17228) Add documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776102#comment-17776102 ] ASF GitHub Bot commented on HDFS-17228: --- jianghuazhu opened a new pull request, #6195: URL: https://github.com/apache/hadoop/pull/6195 ### Description of PR Details: HDFS-17228 ### How was this patch tested? The changes here are mainly related to documentation. > Add documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement, documentation >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-17228) Add documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] JiangHua Zhu updated HDFS-17228: Component/s: documentation > Add documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement, documentation >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Created] (HDFS-17228) Add documentation related to BlockManager
JiangHua Zhu created HDFS-17228: --- Summary: Add documentation related to BlockManager Key: HDFS-17228 URL: https://issues.apache.org/jira/browse/HDFS-17228 Project: Hadoop HDFS Issue Type: Improvement Components: block placement Affects Versions: 3.3.6, 3.3.3 Reporter: JiangHua Zhu Attachments: image-2023-10-17-17-25-27-363.png In the BlockManager file, some important comments are missing. Happens here: !image-2023-10-17-17-25-27-363.png! If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Assigned] (HDFS-17228) Add documentation related to BlockManager
[ https://issues.apache.org/jira/browse/HDFS-17228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] JiangHua Zhu reassigned HDFS-17228: --- Assignee: JiangHua Zhu > Add documentation related to BlockManager > - > > Key: HDFS-17228 > URL: https://issues.apache.org/jira/browse/HDFS-17228 > Project: Hadoop HDFS > Issue Type: Improvement > Components: block placement >Affects Versions: 3.3.3, 3.3.6 >Reporter: JiangHua Zhu >Assignee: JiangHua Zhu >Priority: Minor > Attachments: image-2023-10-17-17-25-27-363.png > > > In the BlockManager file, some important comments are missing. > Happens here: > !image-2023-10-17-17-25-27-363.png! > If it is improved, the robustness of the distributed system can be increased. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-17218) NameNode should remove its excess blocks from the ExcessRedundancyMap When a DN registers
[
https://issues.apache.org/jira/browse/HDFS-17218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776063#comment-17776063
]
ASF GitHub Bot commented on HDFS-17218:
---
zhangshuyan0 commented on code in PR #6176:
URL: https://github.com/apache/hadoop/pull/6176#discussion_r1361730711
##
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java:
##
@@ -1007,6 +1013,7 @@ public void updateRegInfo(DatanodeID nodeReg) {
for(DatanodeStorageInfo storage : getStorageInfos()) {
if (storage.getStorageType() != StorageType.PROVIDED) {
storage.setBlockReportCount(0);
+storage.setBlockContentsStale(true);
Review Comment:
> namenode thinks that this DN contains this block, but actually the DN
doesn't store this block
Actually, this situation can happen at any time, not just between
"registerDataNode" and "blockReport". Why do you think that after the DN is
re-registered, the probability of the above situation happening will increase,
and it needs to be dealt with specifically?
IMO, the concept stale was born to mark replicas that may have been deleted
by NN commands but do not exist in the ExcessRedundancyMap. It is closely
related to the state of ExcessRedundancyMap.
- After the failover, there is no data in the ExcessRedundancyMap of the new
ANN, so all datanodes need to be marked as stale.
- In this patch, the ExcessRedundancyMap of the corresponding DN is cleared
when re-registered, so it needs to be set to stale.
If the data in the ExcessRedundancyMap is correct, it means that NN clearly
knows which replicas are about to be deleted, which ensures that NN will not
actively delete all replicas of a block.
Looking forward to your reply @ZanderXu .
> NameNode should remove its excess blocks from the ExcessRedundancyMap When a
> DN registers
> -
>
> Key: HDFS-17218
> URL: https://issues.apache.org/jira/browse/HDFS-17218
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namanode
>Reporter: Haiyang Hu
>Assignee: Haiyang Hu
>Priority: Major
> Labels: pull-request-available
> Attachments: image-2023-10-12-15-52-52-336.png
>
>
> Currently found that DN will lose all pending DNA_INVALIDATE blocks if it
> restarts.
> *Root case*
> Current DN enables asynchronously deletion, it have many pending deletion
> blocks in memory.
> when DN restarts, these cached blocks may be lost. it causes some blocks in
> the excess map in the namenode to be leaked and this will result in many
> blocks having more replicas then expected.
> *solution*
> Consider NameNode should remove its excess blocks from the
> ExcessRedundancyMap When a DN registers,
> this approach will ensure that when processing the DN's full block report,
> the 'processExtraRedundancy' can be performed according to the actual of the
> blocks.
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