[HUDI-2648] Retry FileSystem action instead of failed directly. #3887

zhangyue19921010 · 2021-10-29T02:26:58Z

https://issues.apache.org/jira/browse/HUDI-2648

What is the purpose of the pull request

Hoodie will do lots of list/get/put/delete etc actions on filesystem.
Sometimes will meet the fileSystem performance issue or short service suspension, for example

Using hoodie on S3, and will throw lots of exception like this

com.amazonaws.services.s3.model.AmazonS3Exception: Status Code: 503, AWS Service: Amazon S3, AWS Request ID: J58R9W4E324DWJ1Y, AWS Error Code: SlowDown, AWS Error Message: Please reduce your request rate., S3 Extended Request ID: Pkd6VCJKTuq3NJ6vUQJB1TUznKGvAfjIZkmJOxt+j6oAD5roz+ojKf9rtcBOgUBw4sWeDwxdTv4=
	at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:798)
	at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:421)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:232)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3528)
	at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1393)
	at org.apache.hadoop.fs.s3a.S3AFileSystem.createEmptyObject(S3AFileSystem.java:1191)
	at org.apache.hadoop.fs.s3a.S3AFileSystem.createFakeDirectory(S3AFileSystem.java:1168)
	at org.apache.hadoop.fs.s3a.S3AFileSystem.mkdirs(S3AFileSystem.java:871)
	at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:1881)
	at org.apache.hudi.common.fs.HoodieWrapperFileSystem.lambda$mkdirs$25(HoodieWrapperFileSystem.java:632)
	at org.apache.hudi.common.fs.HoodieWrapperFileSystem.executeFuncWithTimeMetrics(HoodieWrapperFileSystem.java:100)
	at org.apache.hudi.common.fs.HoodieWrapperFileSystem.mkdirs(HoodieWrapperFileSystem.java:631)
	at org.apache.hudi.table.MarkerFiles.create(MarkerFiles.java:195)
	at org.apache.hudi.io.HoodieWriteHandle.createMarkerFile(HoodieWriteHandle.java:129)
	at org.apache.hudi.io.HoodieCreateHandle.lambda$new$1(HoodieCreateHandle.java:97)
	at org.apache.hudi.common.util.RetryHelper.start(RetryHelper.java:61)
	at org.apache.hudi.io.HoodieCreateHandle.<init>(HoodieCreateHandle.java:100)
	at org.apache.hudi.io.HoodieCreateHandle.<init>(HoodieCreateHandle.java:67)
	at org.apache.hudi.io.CreateHandleFactory.create(CreateHandleFactory.java:34)
	at org.apache.hudi.execution.CopyOnWriteInsertHandler.consumeOneRecord(CopyOnWriteInsertHandler.java:83)
	at org.apache.hudi.execution.CopyOnWriteInsertHandler.consumeOneRecord(CopyOnWriteInsertHandler.java:40)
	at org.apache.hudi.common.util.queue.BoundedInMemoryQueueConsumer.consume(BoundedInMemoryQueueConsumer.java:37)
	at org.apache.hudi.common.util.queue.BoundedInMemoryExecutor.lambda$null$2(BoundedInMemoryExecutor.java:121)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

It's because of meet the throttle of S3 list/get/put/delete.
https://aws.amazon.com/premiumsupport/knowledge-center/s3-request-limit-avoid-throttling/

This exception will cause app crashed, which can be solved by retry wrapper.

Brief change log

(for example:)

Modify AnnotationLocation checkstyle rule in checkstyle.xml

Verify this pull request

(Please pick either of the following options)

This pull request is a trivial rework / code cleanup without any test coverage.

(or)

This pull request is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

(example:)

Added integration tests for end-to-end.
Added HoodieClientWriteTest to verify the change.
Manually verified the change by running a job locally.

Committer checklist

Has a corresponding JIRA in PR title & commit
Commit message is descriptive of the change
CI is green
Necessary doc changes done or have another open PR
For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.

nsivabalan · 2021-11-01T23:17:05Z

@hudi-bot azure run

zhangyue19921010 · 2021-11-07T01:15:43Z

hi @nsivabalan could you please help to review this PR at your convenience? Thanks a lot if you could give me a hand!

minchowang · 2021-11-07T05:49:51Z

hudi-client/hudi-spark-client/src/main/java/org/apache/hudi/table/HoodieSparkTable.java

+                .setBasePath(config.getBasePath())
+                .setLoadActiveTimelineOnLoad(true)
+                .setConsistencyGuardConfig(config.getConsistencyGuardConfig())
+                .setFileSystemGuardConfig(config.getFileSystemGuardConfig())


hi @zhangyue19921010 ，i think also require add about setFileSystemGuardConfig in HoodieFlinkTable calss

Sure, thing. Will get it done.

cc @danny0405 :) Hope you are interested in this patch.

zhangyue19921010 · 2021-11-09T01:58:19Z

Hi @vinothchandar and @bvaradar. Friendly ping. I notice that you are very familiar with hudi filesystem wrapper. So could you please pay a little attention for this patch if it's possible？According to our Hudi on S3 experience, it's a common issue to meet the S3 threshold, and may need this retry wrapper to solve it.
Looking forward to your replay. Thanks in advance! :)

nsivabalan · 2021-11-12T04:21:16Z

looks like a good thing to have. have marked it as release blocker. will try to review it sooner.

nsivabalan

Left some minor comments.

nsivabalan · 2021-11-22T23:05:12Z

hudi-common/src/main/java/org/apache/hudi/common/fs/FileSystemGuardConfig.java

+public class FileSystemGuardConfig  extends HoodieConfig {
+
+  public static final ConfigProperty<String> FILESYSTEM_RETRY_ENABLE = ConfigProperty
+      .key("hoodie.filesystem.action.retry.enabled")


"enable" would suffice. we don't need a "d" in the end, to be in line with other configs

Sure, changed.

nsivabalan · 2021-11-22T23:06:59Z

hudi-common/src/main/java/org/apache/hudi/common/fs/FileSystemGuardConfig.java

+      .withDocumentation("Maximum amount of time (in ms), to wait for next retry.");
+
+  public static final ConfigProperty<Integer> MAX_RETRY_NUMBERS = ConfigProperty
+      .key("hoodie.filesystem.action.retry.max_numbers")


can you help me understand, why do we need both max retry number and max internal ms ? I thought either one is good enough.
So, either 100*4 = 4 retries w/ 100 ms delay.
or 2000/100 = 20 retries w/ 100 ms delay.

We use (long) Math.pow(2, retryCount) * initialIntervalTime + random.nextInt(100); to calculate sleep time before each retry. And we may need MAX_RETRY_INTERVAL_MS to control the maximum duration of a single sleep in case sleep too longMath.min(getWaitTimeExp(retries), maxIntervalTime).

Also use MAX_RETRY_NUMBERS to control max retry numbers to limit total retry time.

nsivabalan · 2021-11-22T23:09:11Z

hudi-common/src/main/java/org/apache/hudi/common/util/RetryHelper.java

+    int retries = 0;
+    boolean success = false;
+    RuntimeException exception = null;
+    T t = null;


can we please name the variables nicely.

Sure thing, changed.

nsivabalan · 2021-11-22T23:10:14Z

hudi-common/src/main/java/org/apache/hudi/common/util/RetryHelper.java

+        }
+        retries++;
+      }
+    } while (retries <= num);


we can probably remove L88 and do retries++ here

emmm, we only do ++ when caught exception, so maybe can't move it out of catch() {} block.

vinothchandar

Would n't the aws s3 client already do this? the retries? Can you please explain do we need this at the Hudi layer>?

zhangyue19921010 · 2021-11-23T05:53:46Z

Hi @vinothchandar Thanks for your attention.
Actually S3 java SDK take care of these retry logic through config fs.s3a.attempts.maximum

The necessary to build a retry layer on hudi is to let hudi can deal with different kinds of filesystem not only S3.
After careful thinking maybe it's not urgent for this patch and will close it.
Maybe we can reopen this patch if there's another fs need to let hudi take care of retring.

Anyway, really appreciate for @nsivabalan and @vinothchandar 's attention. And sorry to bother you guys.

minchowang · 2021-11-29T06:58:55Z

cos(Cloud Object Storage) need this patch help to retry https://cloud.tencent.com/product/cos

zhangyue19921010 · 2021-12-01T03:52:12Z

cos(Cloud Object Storage) need this patch help to retry https://cloud.tencent.com/product/cos

Thanks for @mincwang 's info, It looks like https://intl.cloud.tencent.com/?lang=en&pg= (or some other dfs ) needs hoodie to take care of retry logic. So would we please going on this patch and get it done.

What's your opinion? @nsivabalan and @vinothchandar Looking forward to your reply :>

nsivabalan · 2021-12-10T03:55:56Z

sure, makes sense if there are other cloud stores that needs this retry. Can you please address the feedback given already.

nsivabalan · 2021-12-10T03:56:59Z

hudi-common/src/main/java/org/apache/hudi/common/fs/FileSystemGuardConfig.java

+@ConfigClassProperty(name = "FileSystem Guard Configurations",
+        groupName = ConfigGroups.Names.WRITE_CLIENT,
+        description = "The filesystem guard related config options, to help deal with runtime exception like s3 list/get/put/delete performance issues.")
+public class FileSystemGuardConfig  extends HoodieConfig {


do you think naming this "FileSystemRetryConfig" would be more appropriate?

Sure, "FileSystemRetryConfig" is more appropriate. Changed.

zhangyue19921010 · 2021-12-10T13:13:32Z

sure, makes sense if there are other cloud stores that needs this retry. Can you please address the feedback given already.

Sure, I will address the comments ASAP. Thanks a lot for your attention.

vinothchandar · 2021-12-21T03:40:17Z

@zhangyue19921010 Thanks for patiently working through this, with us. I am wondering if we can guard this behavior for each storage scheme.

vinothchandar

Left some high level restructuring. Let me know what you think! We can take it from there.

vinothchandar · 2021-12-21T03:41:17Z

hudi-client/hudi-client-common/src/main/java/org/apache/hudi/client/AbstractHoodieClient.java

-    return HoodieTableMetaClient.builder().setConf(hadoopConf).setBasePath(config.getBasePath())
-        .setLoadActiveTimelineOnLoad(loadActiveTimelineOnLoad).setConsistencyGuardConfig(config.getConsistencyGuardConfig())
-        .setLayoutVersion(Option.of(new TimelineLayoutVersion(config.getTimelineLayoutVersion()))).build();
+    return HoodieTableMetaClient.builder()


could we please avoid non-essential style fixes in the PR. Makes it harder to review.

vinothchandar · 2021-12-21T03:41:36Z

hudi-client/hudi-flink-client/src/main/java/org/apache/hudi/table/HoodieFlinkTable.java

-        HoodieTableMetaClient.builder().setConf(context.getHadoopConf().get()).setBasePath(config.getBasePath())
-            .setLoadActiveTimelineOnLoad(true).setConsistencyGuardConfig(config.getConsistencyGuardConfig())
-            .setLayoutVersion(Option.of(new TimelineLayoutVersion(config.getTimelineLayoutVersion()))).build();
+        HoodieTableMetaClient.builder()


vinothchandar · 2021-12-21T03:42:49Z

hudi-common/src/main/java/org/apache/hudi/common/fs/FileSystemRetryConfig.java

+public class FileSystemRetryConfig  extends HoodieConfig {
+
+  public static final ConfigProperty<String> FILESYSTEM_RETRY_ENABLE = ConfigProperty
+      .key("hoodie.filesystem.action.retry.enable")


can we drop action from the property name, given action has a different meaning inside Hudi? May be filesystem.operation?

Okay, Changed.

vinothchandar · 2021-12-21T03:44:05Z

hudi-common/src/main/java/org/apache/hudi/common/table/HoodieTableMetaClient.java

  public static HoodieTableMetaClient reload(HoodieTableMetaClient oldMetaClient) {
-    return HoodieTableMetaClient.builder().setConf(oldMetaClient.hadoopConf.get()).setBasePath(oldMetaClient.basePath).setLoadActiveTimelineOnLoad(oldMetaClient.loadActiveTimelineOnLoad)
-        .setConsistencyGuardConfig(oldMetaClient.consistencyGuardConfig).setLayoutVersion(Option.of(oldMetaClient.timelineLayoutVersion)).setPayloadClassName(null).build();
+    return HoodieTableMetaClient.builder()


can you please comment on these reformatted blocks to highlight what has actually changed

vinothchandar · 2021-12-21T03:44:38Z

hudi-common/src/main/java/org/apache/hudi/common/table/HoodieTableMetaClient.java

    if (fs == null) {
-      FileSystem fileSystem = FSUtils.getFs(metaPath, hadoopConf.newCopy());
+      FileSystem fileSystem;
+      if (fileSystemRetryConfig.isFileSystemActionRetryEnable()) {


could we make this a property of the StorageScheme?

Emmm..., it's easy to make this as a property of the StorageScheme something like FILE("file", append: false, retry: true)
What I am more worried about is that this may mean that the retry function is turned on by default. And it may be hard for users to disable this retry if they don't need it.

yeah, I am not sure if we can make it a property of StorageScheme. we should let users enable on a need basis.

Guess, what vinoth refers to is, we should add a property named supportsRetry or something to each StorageScheme. So, only for those storage schemes where retries are supported, we can check the config (fileSystemRetryConfig.isFileSystemActionRetryEnable()) and then invoke our retry Helper.

@vinothchandar : can you please clarify on your above suggestion.

In that case, I think we can just have the config alone. and let the user decide.

Ack and changed as your suggestion. Thanks a lot.

vinothchandar · 2021-12-21T03:47:39Z

hudi-common/src/main/java/org/apache/hudi/common/util/RetryHelper.java

+
+public class RetryHelper<T> {
+  private static final Logger LOG = LogManager.getLogger(RetryHelper.class);
+  private HoodieWrapperFileSystem.CheckedFunction<T> func;


Could we keep this generic? if we cannot avoid referencing any wrapper file system stuff here, then we need to move this back with the fs package?

Sure, Changed.

zhangyue19921010 · 2021-12-23T08:04:19Z

I am wondering if we can guard this behavior for each storage scheme.

Hi @vinothchandar Thanks a lot for your attention. Let me explain the framework of this retry wrapper.

As this picture shows, we design a new wrapper named hoodieRetryWrapper to wrap common file system which will retry specific common filesystem operation.
Also we let HoodieWrapperFileSystem hold this RetryWrapperFileSystem just like hold a common filesystem so that there's no damaged for metrics collection etc.

In summary, hoodieRetryWrapper can wrap and guard all kinds of storage scheme as long as let hoodieRetryWrapper hold this storage scheme client.

nsivabalan

LGTM. Lets wait to hear from vinoth on his suggestion.

nsivabalan · 2022-01-24T04:03:43Z

hudi-common/src/main/java/org/apache/hudi/common/table/HoodieTableMetaClient.java

    if (fs == null) {
-      FileSystem fileSystem = FSUtils.getFs(metaPath, hadoopConf.newCopy());
+      FileSystem fileSystem;
+      if (fileSystemRetryConfig.isFileSystemActionRetryEnable()) {


Guess, what vinoth refers to is, we should add a property named supportsRetry or something to each StorageScheme. So, only for those storage schemes where retries are supported, we can check the config (fileSystemRetryConfig.isFileSystemActionRetryEnable()) and then invoke our retry Helper.

@vinothchandar : can you please clarify on your above suggestion.

nsivabalan · 2022-02-04T13:24:10Z

@zhangyue19921010 : lets not wait for Vinoth. he has been busy recently. Lets go ahead for now.
can we do this.
add a property named supportsRetry or something to each StorageScheme. So, only for those storage schemes where retries are supported, we can check the config (fileSystemRetryConfig.isFileSystemActionRetryEnable()) and then invoke our retry Helper. for eg, in S3 this can be disabled.

zhangyue19921010 · 2022-02-04T15:05:20Z

@zhangyue19921010 : lets not wait for Vinoth. he has been busy recently. Lets go ahead for now. can we do this. add a property named supportsRetry or something to each StorageScheme. So, only for those storage schemes where retries are supported, we can check the config (fileSystemRetryConfig.isFileSystemActionRetryEnable()) and then invoke our retry Helper. for eg, in S3 this can be disabled.

Sure thing. Will do it ASAP :)

nsivabalan · 2022-02-07T21:29:01Z

thanks!

danny0405 · 2022-02-08T03:31:23Z

@zhangyue19921010 : lets not wait for Vinoth. he has been busy recently. Lets go ahead for now. can we do this. add a property named supportsRetry or something to each StorageScheme. So, only for those storage schemes where retries are supported, we can check the config (fileSystemRetryConfig.isFileSystemActionRetryEnable()) and then invoke our retry Helper. for eg, in S3 this can be disabled.

One thing we should be very careful with is in what exception/error we should do a retry here ? If it is a normal user triggered exception, should we still retry here ?

hudi-common/src/main/java/org/apache/hudi/common/util/RetryHelper.java

zhangyue19921010 · 2022-02-09T12:10:21Z

Hi @nsivabalan and @danny0405 Thanks a lot for you review.
Now we add a property named supportsRetry each StorageScheme. And check it before retry.

Also and a new config named hoodie.filesystem.operation.retry.exceptions to give users an option to decide which Exceptions that needs to be re-tryed. It could solve the overprotection problem.

In that case, I think we can just have the config alone. and let the user decide. From vinothchandar

updated: only check hoodie.filesystem.operation.retry.enable before using retryHelper.

PTAL :) Thanks a lot.

hudi-bot · 2022-02-12T04:23:28Z

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nsivabalan

LGTM. few minor comments. I will go ahead and land the patch. Please take it as a follow up patch.
thanks for the contribution!

nsivabalan · 2022-02-20T20:24:19Z

hudi-common/src/main/java/org/apache/hudi/common/fs/FileSystemRetryConfig.java

+      .withDocumentation("Maximum amount of time (in ms), to wait for next retry.");
+
+  public static final ConfigProperty<Integer> MAX_RETRY_NUMBERS = ConfigProperty
+      .key("hoodie.filesystem.operation.retry.max_numbers")


may be we can name this as "hoodie.filesystem.operation.retry.max.count"

max_times seems better ?

nsivabalan · 2022-02-20T20:25:38Z

hudi-common/src/main/java/org/apache/hudi/common/util/RetryHelper.java

+import java.util.Random;
+import java.util.stream.Collectors;
+
+public class RetryHelper<T> {


nsivabalan · 2022-02-20T20:25:57Z

hudi-common/src/main/java/org/apache/hudi/common/util/RetryHelper.java

+  private static final Logger LOG = LogManager.getLogger(RetryHelper.class);
+  private CheckedFunction<T> func;
+  private int num;
+  private long maxIntervalTime;


can some of these be final ?

nsivabalan · 2022-02-20T20:30:12Z

hudi-common/src/test/java/org/apache/hudi/common/fs/TestFSUtilsWithRetryWrapperEnable.java

+
+  // Test the scenario that fs keeps retrying until it fails.
+  @Test
+  public void testProcessFilesWithExceptions() throws Exception {


Can we add one more test to cover this scenario

to assert that call succeeds after 2(basically before hitting max retries) retries.

zhangyue19921010 · 2022-02-21T02:07:15Z

LGTM. few minor comments. I will go ahead and land the patch. Please take it as a follow up patch.
thanks for the contribution!

Thanks a lot for your review and merge. Sure I will do it ASAP.

…he#3887) Co-authored-by: yuezhang <yuezhang@freewheel.tv>

yuezhang added 7 commits October 26, 2021 10:01

need to add configs

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fix code style

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set fs guard config for hoodie flink table

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hudi-common/src/main/java/org/apache/hudi/common/util/RetryHelper.java Show resolved Hide resolved

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nsivabalan merged commit 359fbfd into apache:master Feb 20, 2022

vingov pushed a commit to vingov/hudi that referenced this pull request Apr 3, 2022

[HUDI-2648] Retry FileSystem action instead of failed directly. (apac…

5e77fc9

…he#3887) Co-authored-by: yuezhang <yuezhang@freewheel.tv>

danny0405 mentioned this pull request Jun 16, 2022

[HUDI-3669] Add a remote request retry mechanism for 'Remotehoodietablefiles… #5884

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[HUDI-2648] Retry FileSystem action instead of failed directly. #3887

[HUDI-2648] Retry FileSystem action instead of failed directly. #3887

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zhangyue19921010 commented Oct 29, 2021

What is the purpose of the pull request

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