1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
#include "retry_lib.h"
#include <yt/cpp/mapreduce/interface/config.h>
#include <yt/cpp/mapreduce/interface/errors.h>
#include <yt/cpp/mapreduce/interface/error_codes.h>
#include <yt/cpp/mapreduce/interface/retry_policy.h>
#include <util/string/builder.h>
#include <util/generic/set.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
TAttemptLimitedRetryPolicy::TAttemptLimitedRetryPolicy(ui32 attemptLimit, const TConfigPtr& config)
: Config_(config)
, AttemptLimit_(attemptLimit)
{ }
void TAttemptLimitedRetryPolicy::NotifyNewAttempt()
{
++Attempt_;
}
TMaybe<TDuration> TAttemptLimitedRetryPolicy::OnGenericError(const std::exception& e)
{
if (IsAttemptLimitExceeded()) {
return Nothing();
}
return GetBackoffDuration(e, Config_);
}
TMaybe<TDuration> TAttemptLimitedRetryPolicy::OnRetriableError(const TErrorResponse& e)
{
if (IsAttemptLimitExceeded()) {
return Nothing();
}
return GetBackoffDuration(e, Config_);
}
void TAttemptLimitedRetryPolicy::OnIgnoredError(const TErrorResponse& /*e*/)
{
--Attempt_;
}
TString TAttemptLimitedRetryPolicy::GetAttemptDescription() const
{
return ::TStringBuilder() << "attempt " << Attempt_ << " of " << AttemptLimit_;
}
bool TAttemptLimitedRetryPolicy::IsAttemptLimitExceeded() const
{
return Attempt_ >= AttemptLimit_;
}
////////////////////////////////////////////////////////////////////////////////
class TTimeLimitedRetryPolicy
: public IRequestRetryPolicy
{
public:
TTimeLimitedRetryPolicy(IRequestRetryPolicyPtr retryPolicy, TDuration timeout)
: RetryPolicy_(retryPolicy)
, Deadline_(TInstant::Now() + timeout)
, Timeout_(timeout)
{ }
void NotifyNewAttempt() override
{
if (TInstant::Now() >= Deadline_) {
ythrow TRequestRetriesTimeout() << "retry timeout exceeded (timeout: " << Timeout_ << ")";
}
RetryPolicy_->NotifyNewAttempt();
}
TMaybe<TDuration> OnGenericError(const std::exception& e) override
{
return RetryPolicy_->OnGenericError(e);
}
TMaybe<TDuration> OnRetriableError(const TErrorResponse& e) override
{
return RetryPolicy_->OnRetriableError(e);
}
void OnIgnoredError(const TErrorResponse& e) override
{
return RetryPolicy_->OnIgnoredError(e);
}
TString GetAttemptDescription() const override
{
return RetryPolicy_->GetAttemptDescription();
}
private:
const IRequestRetryPolicyPtr RetryPolicy_;
const TInstant Deadline_;
const TDuration Timeout_;
};
////////////////////////////////////////////////////////////////////////////////
class TDefaultClientRetryPolicy
: public IClientRetryPolicy
{
public:
explicit TDefaultClientRetryPolicy(IRetryConfigProviderPtr retryConfigProvider, const TConfigPtr& config)
: RetryConfigProvider_(std::move(retryConfigProvider))
, Config_(config)
{ }
IRequestRetryPolicyPtr CreatePolicyForGenericRequest() override
{
return Wrap(CreateDefaultRequestRetryPolicy(Config_));
}
IRequestRetryPolicyPtr CreatePolicyForStartOperationRequest() override
{
return Wrap(MakeIntrusive<TAttemptLimitedRetryPolicy>(static_cast<ui32>(Config_->StartOperationRetryCount), Config_));
}
IRequestRetryPolicyPtr Wrap(IRequestRetryPolicyPtr basePolicy)
{
auto config = RetryConfigProvider_->CreateRetryConfig();
if (config.RetriesTimeLimit < TDuration::Max()) {
return ::MakeIntrusive<TTimeLimitedRetryPolicy>(std::move(basePolicy), config.RetriesTimeLimit);
}
return basePolicy;
}
private:
IRetryConfigProviderPtr RetryConfigProvider_;
const TConfigPtr Config_;
};
class TDefaultRetryConfigProvider
: public IRetryConfigProvider
{
public:
TRetryConfig CreateRetryConfig() override
{
return {};
}
};
////////////////////////////////////////////////////////////////////////////////
IRequestRetryPolicyPtr CreateDefaultRequestRetryPolicy(const TConfigPtr& config)
{
return MakeIntrusive<TAttemptLimitedRetryPolicy>(static_cast<ui32>(config->RetryCount), config);
}
IClientRetryPolicyPtr CreateDefaultClientRetryPolicy(IRetryConfigProviderPtr retryConfigProvider, const TConfigPtr& config)
{
return MakeIntrusive<TDefaultClientRetryPolicy>(std::move(retryConfigProvider), config);
}
IRetryConfigProviderPtr CreateDefaultRetryConfigProvider()
{
return MakeIntrusive<TDefaultRetryConfigProvider>();
}
////////////////////////////////////////////////////////////////////////////////
static bool IsChunkError(int code)
{
return code / 100 == 7;
}
// Check whether:
// 1) codes contain at least one chunk error AND
// 2) codes don't contain non-retriable chunk errors.
static bool IsRetriableChunkError(const TSet<int>& codes)
{
using namespace NClusterErrorCodes;
auto isChunkError = false;
for (auto code : codes) {
switch (code) {
case NChunkClient::SessionAlreadyExists:
case NChunkClient::ChunkAlreadyExists:
case NChunkClient::WindowError:
case NChunkClient::BlockContentMismatch:
case NChunkClient::InvalidBlockChecksum:
case NChunkClient::BlockOutOfRange:
case NChunkClient::MissingExtension:
case NChunkClient::NoSuchBlock:
case NChunkClient::NoSuchChunk:
case NChunkClient::NoSuchChunkList:
case NChunkClient::NoSuchChunkTree:
case NChunkClient::NoSuchChunkView:
case NChunkClient::NoSuchMedium:
return false;
default:
isChunkError |= IsChunkError(code);
break;
}
}
return isChunkError;
}
static TMaybe<TDuration> TryGetBackoffDuration(const TErrorResponse& errorResponse, const TConfigPtr& config)
{
int httpCode = errorResponse.GetHttpCode();
if (httpCode / 100 != 4 && !errorResponse.IsFromTrailers()) {
return config->RetryInterval;
}
auto allCodes = errorResponse.GetError().GetAllErrorCodes();
using namespace NClusterErrorCodes;
if (httpCode == 429
|| allCodes.count(NSecurityClient::RequestQueueSizeLimitExceeded)
|| allCodes.count(NRpc::RequestQueueSizeLimitExceeded))
{
// request rate limit exceeded
return config->RateLimitExceededRetryInterval;
}
if (errorResponse.IsConcurrentOperationsLimitReached()) {
// limit for the number of concurrent operations exceeded
return config->StartOperationRetryInterval;
}
if (IsRetriableChunkError(allCodes)) {
// chunk client errors
return config->ChunkErrorsRetryInterval;
}
for (auto code : TVector<int>{
NRpc::TransportError,
NRpc::Unavailable,
NApi::RetriableArchiveError,
Canceled,
}) {
if (allCodes.contains(code)) {
return config->RetryInterval;
}
}
return Nothing();
}
TDuration GetBackoffDuration(const TErrorResponse& errorResponse, const TConfigPtr& config)
{
return TryGetBackoffDuration(errorResponse, config).GetOrElse(config->RetryInterval);
}
bool IsRetriable(const TErrorResponse& errorResponse)
{
// Retriability of an error doesn't depend on config, so just use global one.
return TryGetBackoffDuration(errorResponse, TConfig::Get()).Defined();
}
bool IsRetriable(const std::exception& ex)
{
if (dynamic_cast<const TRequestRetriesTimeout*>(&ex)) {
return false;
}
return true;
}
TDuration GetBackoffDuration(const std::exception& /*error*/, const TConfigPtr& config)
{
return GetBackoffDuration(config);
}
TDuration GetBackoffDuration(const TConfigPtr& config)
{
return config->RetryInterval;
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
|
