[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Clampffer updated HDFS-10543:
---
Parent Issue: HDFS-14032 (was: HDFS-8707)
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
>Assignee: James Clampffer
>Priority: Major
> Fix For: HDFS-8707
>
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch, HDFS-10543.HDFS-8707.002.patch,
> HDFS-10543.HDFS-8707.003.patch, HDFS-10543.HDFS-8707.004.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Vinayakumar B updated HDFS-10543:
-
Fix Version/s: HDFS-8707
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
> Fix For: HDFS-8707
>
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch, HDFS-10543.HDFS-8707.002.patch,
> HDFS-10543.HDFS-8707.003.patch, HDFS-10543.HDFS-8707.004.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Clampffer updated HDFS-10543:
---
Resolution: Fixed
Status: Resolved (was: Patch Available)
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch, HDFS-10543.HDFS-8707.002.patch,
> HDFS-10543.HDFS-8707.003.patch, HDFS-10543.HDFS-8707.004.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Clampffer updated HDFS-10543:
---
Assignee: (was: James Clampffer)
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch, HDFS-10543.HDFS-8707.002.patch,
> HDFS-10543.HDFS-8707.003.patch, HDFS-10543.HDFS-8707.004.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaowei Zhu updated HDFS-10543:
---
Attachment: HDFS-10543.HDFS-8707.004.patch
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
>Assignee: James Clampffer
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch, HDFS-10543.HDFS-8707.002.patch,
> HDFS-10543.HDFS-8707.003.patch, HDFS-10543.HDFS-8707.004.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaowei Zhu updated HDFS-10543:
---
Attachment: HDFS-10543.HDFS-8707.003.patch
Fix whitespace issue.
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
>Assignee: James Clampffer
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch, HDFS-10543.HDFS-8707.002.patch,
> HDFS-10543.HDFS-8707.003.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaowei Zhu updated HDFS-10543:
---
Attachment: HDFS-10543.HDFS-8707.002.patch
HDFS-10543.HDFS-8707.002.patch fixed the issue that after moving the retry
block to PositionRead, it only reads 1 block again.
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
>Assignee: James Clampffer
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch, HDFS-10543.HDFS-8707.002.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Clampffer updated HDFS-10543:
---
Status: Patch Available (was: Open)
Marking as patch available to get CI running, had to assign to myself to make
that happen.
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
>Assignee: James Clampffer
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Clampffer updated HDFS-10543:
---
Flags: Patch
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Clampffer updated HDFS-10543:
---
Flags: (was: Patch)
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaowei Zhu updated HDFS-10543:
---
Attachment: HDFS-10543.HDFS-8707.001.patch
HDFS-10543.HDFS-8707.001.patch moves retry loop of reading a multi-block file
to PositionRead.
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
> Attachments: HDFS-10543.HDFS-8707.000.patch,
> HDFS-10543.HDFS-8707.001.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaowei Zhu updated HDFS-10543:
---
Attachment: HDFS-10543.HDFS-8707.000.patch
The patch fixed the issue that hdfsRead return only the size of the last read
block. And it also fixed the bug that when offset is at the last byte of a
block, it will return as block not found.
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
> Attachments: HDFS-10543.HDFS-8707.000.patch
>
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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[jira] [Updated] (HDFS-10543) hdfsRead read stops at block boundary
[
https://issues.apache.org/jira/browse/HDFS-10543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaowei Zhu updated HDFS-10543:
---
Description:
Reproducer:
char *buf2 = new char[file_info->mSize];
memset(buf2, 0, (size_t)file_info->mSize);
int ret = hdfsRead(fs, file, buf2, file_info->mSize);
delete [] buf2;
if(ret != file_info->mSize) {
std::stringstream ss;
ss << "tried to read " << file_info->mSize << " bytes. but read " <<
ret << " bytes";
ReportError(ss.str());
hdfsCloseFile(fs, file);
continue;
}
When it runs with a file ~1.4GB large, it will return an error like "tried to
read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
against has a block size of 134217728 bytes. So it seems hdfsRead will stop at
a block boundary. Looks like a regression. We should add retry to continue
reading cross blocks in case of files w/ multiple blocks.
was:
Reproducer:
char *buf2 = new char[file_info->mSize];
memset(buf2, 0, (size_t)file_info->mSize);
int ret = hdfsRead(fs, file, buf2, file_info->mSize);
delete [] buf2;
if(ret != file_info->mSize) {
std::stringstream ss;
ss << "tried to read " << file_info->mSize << " bytes. but read " <<
ret << " bytes";
ReportError(ss.str());
hdfsCloseFile(fs, file);
continue;
}
When it runs with a file ~1.4GB large, it will return an error like "tried to
read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
against has a block size of 146890 bytes. So it seems hdfsRead will stop at
a block boundary. Looks like a regression. We should add retry to continue
reading cross blocks in case of files w/ multiple blocks.
> hdfsRead read stops at block boundary
> -
>
> Key: HDFS-10543
> URL: https://issues.apache.org/jira/browse/HDFS-10543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
>Reporter: Xiaowei Zhu
>
> Reproducer:
> char *buf2 = new char[file_info->mSize];
> memset(buf2, 0, (size_t)file_info->mSize);
> int ret = hdfsRead(fs, file, buf2, file_info->mSize);
> delete [] buf2;
> if(ret != file_info->mSize) {
> std::stringstream ss;
> ss << "tried to read " << file_info->mSize << " bytes. but read " <<
> ret << " bytes";
> ReportError(ss.str());
> hdfsCloseFile(fs, file);
> continue;
> }
> When it runs with a file ~1.4GB large, it will return an error like "tried to
> read 146890 bytes. but read 134217728 bytes". The HDFS cluster it runs
> against has a block size of 134217728 bytes. So it seems hdfsRead will stop
> at a block boundary. Looks like a regression. We should add retry to continue
> reading cross blocks in case of files w/ multiple blocks.
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