[jira] [Created] (HDFS-15537) benjapuk
benjapuk created HDFS-15537: --- Summary: benjapuk Key: HDFS-15537 URL: https://issues.apache.org/jira/browse/HDFS-15537 Project: Hadoop HDFS Issue Type: Bug Reporter: benjapuk -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Commented] (HDFS-15175) Multiple CloseOp shared block instance causes the standby namenode to crash when rolling editlog
[
https://issues.apache.org/jira/browse/HDFS-15175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17182427#comment-17182427
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Hadoop QA commented on HDFS-15175:
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[jira] [Commented] (HDFS-15175) Multiple CloseOp shared block instance causes the standby namenode to crash when rolling editlog
[
https://issues.apache.org/jira/browse/HDFS-15175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17182374#comment-17182374
]
Xiaoqiao He commented on HDFS-15175:
After a deep dig, I believe this case is related to async edit logging.
Consider the following scenario,
a. client A try to close file foo which have two blocks, blk_1 + blk_2. It has
released write lock and file foo's lease but not write out async edit log at
NameNode side. at the same time, client A is waiting for `complete` RPC invoke
to return back.
b. client B try to truncate file foo, and this RPC request is completed
smoothly include write out edit log.
c. `close` operation entry from client A write out edit log entry after
`truncate` successfully also.
d. Standby NameNode will encounter this exception when replay edit entry
`create`- `addblock` - `truncate` - `close`, because it missed one block
reference which is deleted by truncate.
cc [~daryn],[~kihwal] it seems to this corner case is involved by async edit
logging feature. Do you mind to have another check?
> Multiple CloseOp shared block instance causes the standby namenode to crash
> when rolling editlog
>
>
> Key: HDFS-15175
> URL: https://issues.apache.org/jira/browse/HDFS-15175
> Project: Hadoop HDFS
> Issue Type: Bug
>Affects Versions: 2.9.2
>Reporter: Yicong Cai
>Assignee: Wan Chang
>Priority: Critical
> Labels: NameNode
> Attachments: HDFS-15175-trunk.1.patch
>
>
>
> {panel:title=Crash exception}
> 2020-02-16 09:24:46,426 [507844305] - ERROR [Edit log
> tailer:FSEditLogLoader@245] - Encountered exception on operation CloseOp
> [length=0, inodeId=0, path=..., replication=3, mtime=1581816138774,
> atime=1581814760398, blockSize=536870912, blocks=[blk_5568434562_4495417845],
> permissions=da_music:hdfs:rw-r-, aclEntries=null, clientName=,
> clientMachine=, overwrite=false, storagePolicyId=0, opCode=OP_CLOSE,
> txid=32625024993]
> java.io.IOException: File is not under construction: ..
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:442)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:237)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:146)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:891)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:872)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:262)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:395)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$300(EditLogTailer.java:348)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:365)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:360)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1873)
> at
> org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:479)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:361)
> {panel}
>
> {panel:title=Editlog}
>
> OP_REASSIGN_LEASE
>
> 32625021150
> DFSClient_NONMAPREDUCE_-969060727_197760
> ..
> DFSClient_NONMAPREDUCE_1000868229_201260
>
>
> ..
>
> OP_CLOSE
>
> 32625023743
> 0
> 0
> ..
> 3
> 1581816135883
> 1581814760398
> 536870912
>
>
> false
>
> 5568434562
> 185818644
> 4495417845
>
>
> da_music
> hdfs
> 416
>
>
>
> ..
>
> OP_TRUNCATE
>
> 32625024049
> ..
> DFSClient_NONMAPREDUCE_1000868229_201260
> ..
> 185818644
> 1581816136336
>
> 5568434562
> 185818648
> 4495417845
>
>
>
> ..
>
> OP_CLOSE
>
> 32625024993
> 0
> 0
> ..
> 3
> 1581816138774
> 1581814760398
> 536870912
>
>
> false
>
> 5568434562
> 185818644
> 4495417845
>
>
> da_music
> hdfs
> 416
>
>
>
> {panel}
>
>
> The block size should be 185818648 in the first CloseOp. When truncate is
> used, the block size becomes 185818644. The CloseOp/TruncateOp/CloseOp is
> synchronized to the JournalNode in the same batch. The block used by CloseOp
> twice is the same instance, which causes the first CloseOp has wrong block
> size. When SNN rolling Editlog, TruncateOp does not make the file to the
> UnderConstruction state. Then, when the second CloseOp is executed, the file
> is not in the UnderConstruction state, and SNN crashes.
--
This message
[jira] [Commented] (HDFS-15448) When starting a DataNode, call BlockPoolManager#startAll() twice.
[
https://issues.apache.org/jira/browse/HDFS-15448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17182340#comment-17182340
]
Xiaoqiao He commented on HDFS-15448:
Thanks [~jianghuazhu] for your works here. Failed unit tested seems not related
to the changes. Please have another check if have time.
v003 LGTM. +1 from my side. Will commit to trunk pending two days if there is
no objection. cc [~linyiqun][~elgoiri].
> When starting a DataNode, call BlockPoolManager#startAll() twice.
> -
>
> Key: HDFS-15448
> URL: https://issues.apache.org/jira/browse/HDFS-15448
> Project: Hadoop HDFS
> Issue Type: Improvement
>Affects Versions: 3.1.1
>Reporter: jianghua zhu
>Assignee: jianghua zhu
>Priority: Major
> Attachments: HDFS-15448.001.patch, HDFS-15448.002.patch,
> HDFS-15448.003.patch, method_invoke_path.jpg
>
>
> When starting a DataNode, call BlockPoolManager#startAll() twice.
> The first call:
> BlockPoolManager#doRefreshNamenodes()
> private void doRefreshNamenodes(
> Map> addrMap,
> Map> lifelineAddrMap)
> throws IOException {
> ...
> startAll();
> ...
> }
> The second call:
> DataNode#runDatanodeDaemon()
> public void runDatanodeDaemon() throws IOException {
> blockPoolManager.startAll();
> ...
> }
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[jira] [Commented] (HDFS-14852) Remove of LowRedundancyBlocks do NOT remove the block from all queues
[
https://issues.apache.org/jira/browse/HDFS-14852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17182337#comment-17182337
]
Xiaoqiao He commented on HDFS-14852:
Thanks [~ferhui] for your works here. For v006, it seems not necessary to check
`QUEUE_WITH_CORRUPT_BLOCKS` first. Because `QUEUE_WITH_CORRUPT_BLOCKS` is also
less than `LowRedundancyBlocks.LEVEL`, it can be covered by original code
segment logic.
{code:java}
+ if (priorityQueues.get(QUEUE_WITH_CORRUPT_BLOCKS).remove(block)) {
+decrementBlockStat(block, QUEUE_WITH_CORRUPT_BLOCKS,
+oldExpectedReplicas);
+ }
{code}
I am interested how reproduce this case. After quick check method
LowRedundancyBlocks#add and LowRedundancyBlocks#update, it seems one block
reference will exist only one single Queue. Any corner case will break this
constraint?
> Remove of LowRedundancyBlocks do NOT remove the block from all queues
> -
>
> Key: HDFS-14852
> URL: https://issues.apache.org/jira/browse/HDFS-14852
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
>Affects Versions: 3.2.0, 3.0.3, 3.1.2, 3.3.0
>Reporter: Fei Hui
>Assignee: Fei Hui
>Priority: Major
> Attachments: CorruptBlocksMismatch.png, HDFS-14852.001.patch,
> HDFS-14852.002.patch, HDFS-14852.003.patch, HDFS-14852.004.patch,
> HDFS-14852.005.patch, HDFS-14852.006.patch, screenshot-1.png
>
>
> LowRedundancyBlocks.java
> {code:java}
> // Some comments here
> if(priLevel >= 0 && priLevel < LEVEL
> && priorityQueues.get(priLevel).remove(block)) {
> NameNode.blockStateChangeLog.debug(
> "BLOCK* NameSystem.LowRedundancyBlock.remove: Removing block {}"
> + " from priority queue {}",
> block, priLevel);
> decrementBlockStat(block, priLevel, oldExpectedReplicas);
> return true;
> } else {
> // Try to remove the block from all queues if the block was
> // not found in the queue for the given priority level.
> for (int i = 0; i < LEVEL; i++) {
> if (i != priLevel && priorityQueues.get(i).remove(block)) {
> NameNode.blockStateChangeLog.debug(
> "BLOCK* NameSystem.LowRedundancyBlock.remove: Removing block" +
> " {} from priority queue {}", block, i);
> decrementBlockStat(block, i, oldExpectedReplicas);
> return true;
> }
> }
> }
> return false;
> }
> {code}
> Source code is above, the comments as follow
> {quote}
> // Try to remove the block from all queues if the block was
> // not found in the queue for the given priority level.
> {quote}
> The function "remove" does NOT remove the block from all queues.
> Function add from LowRedundancyBlocks.java is used on some places and maybe
> one block in two or more queues.
> We found that corrupt blocks mismatch corrupt files on NN web UI. Maybe it is
> related to this.
> Upload initial patch
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